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22 April, 00:47

Given that tanθ ≈ - 3.966 where π__

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

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  1. 22 April, 03:17
    0
    okay good, that means they are looking for the sine and cosine in quadrant II from the unit circle

    Step-by-step 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.
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