Problem 381. Angle between two vectors

Created by Aurelien Queffurust

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>You have two vectors , determine the angle between these two vectors</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>For example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[u = [0 0 1];\nv = [1 0 0];]]></w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>The angle in degrees between u and v is 90.</w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

1393 Solutions
515 Solvers

Last Solution submitted on May 11, 2021

Last 200 Solutions

Problem Comments

5 Comments

5 Comments

Show 2 older comments

David Young on 22 Feb 2012

It would be good to have a more challenging test suite - see the guidelines for problems. Some solvers write code that is just a lookup table for the test cases, and having only one case makes it trivial to do this.

Rick Rosson on 25 Feb 2012

Also, your test should not use string comparison to evaluate what is a purely numerical computation. It would be better if you subtracted the correct answer from the proposed answer, and then compared the absolute value to a am all threshold, such as 1e-6.

Aurelien Queffurust on 2 Mar 2012

Thnaks for your comments. It was my first or second problem sent to CODY. I didn't catch all the tricks to make strong test cases yet.

Aurelien Queffurust on 11 Jun 2012

I have rescored the problem after adding more robust test suites.

Ashutosh datar on 8 Jul 2013

only one test case runs, others are not working

Solution Comments

Solution 399945

1 Comment

1 Comment

David Verrelli on 4 Apr 2018

Exploits Cody's size calculation algorithm. Use assessFunctionAbsence to thwart (see also Problem 44521).

Solution 65792

1 Comment

1 Comment

Aurelien Queffurust on 5 Jul 2012

cool I have learnt a new MATLAB function

Solution 60488

1 Comment

1 Comment

Aurelien Queffurust on 5 Jul 2012

This solution requires Neural Network Toolbox

Solution 51364

1 Comment

1 Comment

Rick Rosson on 25 Feb 2012

Sorry for cheating, but you made it too easy...

Problem Recent Solvers515

Problem Tags

angle geometry vectors

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 381. Angle between two vectors

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers515

Suggested Problems

More from this Author30

Problem Tags

Community Treasure Hunt

Problem 381. Angle between two vectors

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers515

Suggested Problems

More from this Author30

Problem Tags

Community Treasure Hunt

Players