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8) sin = 3/5 , lies in quadrant II, and cos = 2/5 , lies in quadrant I Find cos ( - ). 9) tan
8) sin = 3/5 , lies in quadrant II, and cos = 2/5 , lies in quadrant I Find cos ( - ).
9) tan = 24/7 , lies in quadrant III, and cos = - 3/5 , lies in quadrant II Find sin ( + ).
10) cos = - 4/5 , lies in quadrant III, and sin = 21/5 , lies in quadrant II Find cos ( + ).
so confused on how to solve these kind of problems
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