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Just need some assistance on this question. I've seen similar questions in the past, but this one doesn't make much sense to me. Thanks!

 

Link to picture: https://drive.google.com/file/d/1BH_pOjVpy1fHMeeod2WV846-QI5RxH8p/view?usp=sharing

 May 23, 2021
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We could select the point P with coordinates as indicated above. The angle is negative, so we must rotate clockwise;Cosine of the angle is to be\(\frac{1}{\sqrt2{}}\) and cosine, in terms of the point (x, y) on its terminal ray, is defined as

 May 23, 2021

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