The expression 3 sin* (% - a) + sin...
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The expression 3 sin* (% - a) + sin"(3- c)] -2 sin* (E+al) + sin6 – c) is equal to

JEE/Engineering Exams
Maths
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( left(1-2 sin ^{2} alpha cos ^{2} alpharight)-2left(1-2 sin ^{2} cos ^{2} alpha-cos ^{2} alpha sin ^{2} alpharight) ) ( left(1-2 sin ^{2} alpha cos ^{2} alpharight)-2left(1-3 sin ^{2} alpha cos ^{2} alpharight) ) ( =3-6 sin ^{2} alpha cos ^{2} alpha-2+sin ^{2} alpha cos ^{2} alpha )
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