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Given that tanθ ≈ −3.966 where π__

2 < θ < π, find the values of sinθ and cosθ.

User StuartM
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1 Answer

4 votes

Answer:

okay good, that means they are looking for the sine and cosine in quadrant II from the unit circle

Explanation:

cos theta = -.2444

sin theta = .9696

These are rounded so be careful. In order to do this, I found the angle using my calculator. It was -75.85, so since this is not in quadrant 2, I added 180 to it to find the angle in quadrant 2. The answer to that is 104.1517 degrees. I then used my calculator again to find the sine and cosine values that i gave you above.

User Jeroenh
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