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The set S_(1) and S_(2) are solution sets of (1 + a) cos theta cos ( 2 theta - b)= (1 + a cos 2 theta ) cos (theta - b) |
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Answer» `{N PI , n in A} and (1)/( 2) {n pi + (-1)^(n) SIN ^(-1) (a sin b) + b, n in Z}` |
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