SOLUTION: Find all 6 trigonometric ratios (sine, cosine, etc) for the given angle: a.)-pi/2 b.) 2pi/3 c.)7pi/4

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Question 985835: Find all 6 trigonometric ratios (sine, cosine, etc) for the given angle:
a.)-pi/2 b.) 2pi/3 c.)7pi/4
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Check the Unit Circle for the values of and

Note that negative angles are measured clockwise from the positive -axis.



Once you know the values of sine and cosine, use the following identities:









John

My calculator said it, I believe it, that settles it