3. X Using the Double angle formula and the fact cos x= cos( (4+4), 2 X 1+cOS X (a) prove that cos for 0≤x≤. 2 (b) find the value of cos in exact by using the result in (a). 12

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Q: Given that sin u = 1 /3 and cos v = −3/5 and that u and v are both  in the second quadrant.  Find…

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A: Two angles are called complementary when their measures add to 90°

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A: Solution is given below:

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A: keeping a note ?as per our company guidelines we are supposed to answer ?️only first question.

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A: Topic:- trigonometry ratios

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