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Sine and Cosine Relations

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Angles x and y are located in the first quadrant such that sinx=3/5 and cosy=5/13.a) Determine an exact value for cosx. b)
1. 3 answers
2. asked by Anonymous
3. 1,568 views
1. For what values is the following equation true? sin(x+20)=cos(y−10)A. X=30 and y=60 B. X=30 and y=40 C. X=20 and y=50 D.
1. 1 answer
2. asked by goku
3. 14 views