Examples of Math Problems

examples of math problems that I like, solved, etc.

Showing posts with label Polar Coordinates. Show all posts

Showing posts with label Polar Coordinates. Show all posts

Friday, May 17, 2013

Find the polar coordinates (r, theta) for the point (-2,-9)

We convert:

%0D%0Ar=sqrt%28x%5E2%2By%5E2%29=sqrt%28%28-2%29%5E2%2B%28-9%29%5E2%29=sqrt%2885%29%0D%0A

%0D%0Ar=sqrt%28x%5E2%2By%5E2%29=sqrt%28%28-2%29%5E2%2B%28-9%29%5E2%29=sqrt%2885%29%0D%0A

%0D%0Atheta=arctan%28y%2Fx%29=arctan%28%28-9%29%2F%28-2%29%29=77.47

degrees

:)

Posted by Unknown at 10:28 PM No comments:

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Labels: My Algebra.com posts, Polar Coordinates, PreCalculus

Sunday, April 28, 2013

Evaluate the Integral

Posted by Unknown at 11:31 AM No comments:

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Labels: Calculus, Integral, Polar Coordinates

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