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Sin 3 A-Cos 3 A = (Sin 2 A-Cos 2 A)(1-2sin 2 A Cos 2 A)

Sin3A-Cos3A = (Sin2A-Cos2A)(1-2sin2A Cos2A)

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1 Answers

Y RAJYALAKSHMI
45 Points
9 years ago
Pl. check the problem.  For eg. this expression is not satisfied for A = pi/3

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