### Python program to calculate arc length of an angle

Please Login in order to post a comment. I think the author is exploting some strange python 2 unicode bug to annoy people. The 'correct solution' is whatever produces the particular character output that the author has defined, rather than the mathematically correct result as defined by the problem spec.

Guys, you need really to get rid of using Unicode here, because people are having problems with Unicode. What is the sense of using that pattern of answer? You said, the that the answer must be in degrees. Why the people should solve problems with unicode? This task is mathematical task, not the task with strings. You even disabled it in Python 3! So, having those facts, don't you think that the task should be fixed?

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### How to find cosine of an angle using Python?

Problem Submissions Leaderboard Discussions Editorial. Sort Discussions, By:. This question is a troll. Here is the second test case input and output: 1 Load more conversations.In physics, sometimes you have to find the angle and magnitude of a vector rather than the components. To find the magnitude, you use the Pythagorean theorem. And to find. From your present location, what is the angle measured from east of the direction to the hotel, and how far away is the hotel?

You can write this problem in vector notation, like so:. The resultant vector is 20, The question wants to know the angle and distance to the hotel. Keep in mind that when you know the horizontal and vertical components of a vector, you can use the tangent to find the angle because. Be careful when doing calculations with inverse tangents, because angles that differ by degrees have the same tangent.

When you take the inverse tangent, you may need to add or subtract degrees to get the actual angle you want. The inverse tangent button on your calculator will always give you an angle between 90 degrees and â€”90 degrees.

If your angle is not in this range, then you have to add or subtract degrees. For this example, the answer of 45 degrees must be correct. If you subtract degrees from your answer of 45 degrees, you get â€” degrees, which is your actual angle measured from the positive x-axis in the clockwise direction. Alternatively, you could reason that since the components of the vector are both negative, you must be between degrees and degrees.

You would then add degrees to your result and get degrees, which would be measured from the positive x-axis in the counterclockwise direction. So, which angle is correct, degrees or degrees? Whether you move counterclockwise degrees or clockwise degrees from the positive x-axis, you end up heading the same direction.

How to Find the Angle and Magnitude of a Vector. Using the angle created by a vector to get to a hotel.Of course, then the limit should be set to 30 or something like that. Hopefully, la. Like Like. MPmath is a multi-precision PY module. So you might want to set mp.

**Program to find angle between hands of clock - Python - TCS CODING QUESTION IN PYTHON - TCS CAMPUS**

There are much more valuable features which you might find interesting as well. Nevertheless, even simple PY provides a decent compensated summation algorithm via math. You can see the difference between sum and fsum when you try to sum up 0. So you would need to compile them in Fortran or C and make sure they use the SSE registers instead of the x87 stack by adding the corresponding compiler directions. This might cause a considarable loss of performance, because there is no hardware support for a LOG function in SSE, for example, whereas the x87 instruction set provides it.

Georg â€” thanks for the MPMath link. I will have a look, but for my purposes with structural analysis where the materials properties will be accurate to 2 SF, if you are lucky, and the loads about 1 SF it really looks like overkill; and good performance is important particularly for solving large systems of simultaneous equations. Perhaps I should look at getting them added. Yes but that is a direct vector process.

Better than trig. About I only works that out last week. Bill â€” I get your point I think. The rotation matrix used to convert between global and local axes uses only sin Gamma and cos Gammaso there is no need to find Gamma, since the sin and cos are defined by purely vector operations. On the other hand, I use an angle to define the rotation of a 2 node beam, and even where I am defining a plate or beam using 3 nodes, I want to be able to define an additional rotation with an angle, so calculating the angle between the local y axis and the Global horizontal plane in all cases seems the simplest way to handle it.

I posted a note on Quartenaries without going far enough down the page and find it uses the sins and cosines. Will ook again. I might do the same for 3D using the vector relationships when the additional rotation angle is 0 which it is most of the time. You are commenting using your WordPress.

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Like this: Like Loading Bookmark the permalink. March 1, at pm. Georg says:. March 3, at am. March 10, at am.Often one is in need to handle mathematical computation of conversion of radians to degrees and vice-versa, especially in the field of geometry. Python offers inbuilt methods to handle this functionality. Both the functions are discussed in this article. Parameters : deg : The degrees value that one needs to convert into radians. Returns : This function returns the floating point radians equivalent of argument.

Parameters : rad : The radians value that one needs to convert into degrees. Returns : This function returns the floating point degrees equivalent of argument.

## Calculate Angle Between Two Vectors In Python

Application : There are many possible applications of these functions in mathematical computations related to geometry and has a certain applications in astronomical computations as well. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.

See your article appearing on the GeeksforGeeks main page and help other Geeks. Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below. Writing code in comment? Please use ide. Python code to demonstrate. Printing radians equivalents. Printing degrees equivalents. Recommended Posts: Convert angles from degrees to radians for all elements in a given NumPy array Convert angles from radians to degrees in a NumPy array numpy.

Check out this Author's contributed articles. Load Comments. We use cookies to ensure you have the best browsing experience on our website.The find method finds the first occurrence of the specified value. The find method is almost the same as the index method, the only difference is that the index method raises an exception if the value is not found.

See example below. Where in the text is the first occurrence of the letter "e" when you only search between position 5 and 10? If the value is not found, the find method returns -1, but the index method will raise an exception:. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:. LOG IN. New User? Sign Up For Free! Forgot password? Example Where in the text is the word "welcome"?

Example Where in the text is the first occurrence of the letter "e"? Example Where in the text is the first occurrence of the letter "e" when you only search between position 5 and 10? HOW TO. Your message has been sent to W3Schools.

## How to find cosine of an angle using Python?

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W3Schools is Powered by W3.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I'm trying to find out the angle of the triangle in the following, I know it should be 90 degrees, however I don't know how to actually calculate it in the following:. It's a little more compicated than that.

You need to use the law of cosines. This is accurate to 4 significant figures. If you provide a more precise value of C, you get a more accurate result. This accepts two inputs as two heights of the triangle and you can get the output angle in proper degree format. Trig functions will convert an angle into a length of a certain leg of a certain triangle. In particular, the tangent is the ratio of the opposite side to the adjacent side. Learn more. Calculate angle of triangle Python Ask Question.

Asked 7 years, 1 month ago.

Active 1 year, 2 months ago. Viewed 31k times. XX What am I doing wrong? Shannon Hochkins Shannon Hochkins 9, 11 11 gold badges 47 47 silver badges 82 82 bronze badges. This gives the angle between A and C. Look into the law of cosines. If I were to use tan I get closer A single trigonometric function will only work if you already have a right angle in the triangle, and are trying to find a different angle.

They giving you almost 90 is coincidental. You only convert the angles, never the ratios. In this case, because the triangle is isosceles, 45 degrees. Active Oldest Votes. Vibert Thio 3 3 3 bronze badges. That worked great, you wouldn't mind explaining it a bit more though would you? ShannonHochkins, follow the link to wikipedia for the explanation. It's really off-topic for this site.

Why is it off topic? I asked how to calculate this, usually an answer is best when it has better descriptions rather than just the code. ShannonHochkins, because it's math. You could try asking for an explanation on math. You can use this also. Suraj Rao This just gave me an even Now that more competitive e-readers are on the market, all that glisters is not gold. Nook, and I-Pad among others offer access to google e-books and you can even check out e-books from, at least from my local library, to the nook.

The most you can do, book wise, with the kindle is buy and share for 14 days with another kindle owner. What about another possibility. A priced Kindle, but with a certain number of books and magazines or newspapers for free. The current model suffers because the books, magazines and newspapers are typically more expensive on the Kindle than the paperback versions. I wish Amazon sold the Kindle as a tree saver, and additionally being a money saver. Amazon is a scary company to compete against because they keep their margins low and give so much of the economics back to the customer.

Once you have paid for Prime, you get everything quickly and love Amazon. I have been continually impressed at how Amazon has sacraficed short term profitability for the long-term health of the business and this would be another example of that.

I like the formatting and usability of iBooks better, though. I too use the iPad Kindle app and the nook app and the stanza app and the iBooks app and the app for my local libraries I am now a bibliophile of both the print and ebook type. I can go on reading the my kindle for hours. All its missing is a better nav system.

There is no extra cost beyond what you already pay. I would love a free Kindle. Seems like a huge missed opportunity. It would be yet another incentive for people to sign up for Amazon Prime. Free shipping, free movie streaming, free Kindle. As a Prime user, I actually buy a lot more from Amazon.

Why go to the store to buy a pack of batteries. I can get them cheap on Amazon and have them in 2 days. At first, Bloggers were saying that Amazon was selling the Kindle at a loss. Now they are saying that the Kindle costs little to make. Either way, if it is true that they are giving away the Kindle for Prime members, then this is clearly ambition on a grand scale. Perhaps wsus iis settings direction Amazon could take in providing free, or at least below cost, hardware would be to enhance its capabilities to purchase more than just e-books.

The new ad-included Kindle will ship starting May 3, RIGHT on time to match the declining forecast line. It currently costs 140 USD.

Is everyone else seeing something that I am not. The key is that when the price drops it will match predictionbut the price drops are erratic, so may stay above the curve for a while. Joe My wife has a Kindle. Kips I suppose most books are just as boring for you. John Hinnegan I was the same way.

Gonzague Dambricourt whats frustrating is. Like the free digital copy of a movie that you get when you buy the actual DVD belgand As long as you redeem it within a few months after the initial release date.

Timaree Drat, I just got a kindle this Christmas. TinyVox Time counts too. Wilbur Four data points is a slam dunk. You should make zillions on the market!.

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