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Mathematics 10 Online
OpenStudy (lucaz):

the terminal side of an angle theta is in quadrant II if tan(theta)= -5/3 what is cos(theta)?

OpenStudy (lucaz):

@Mertsj can you help here?

OpenStudy (mertsj):

|dw:1391310400538:dw|

OpenStudy (mertsj):

Use the Pythagorean Theorem to find the hypotenuse. Then use the fact that cos = side adjacent over hypotenuse to find the cosine. Remember, cosine is like x and is therefore negative in the second quadrant.

OpenStudy (lucaz):

alright, thank you!

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