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[" 12."sin^(2)6x-sin^(2)4x=sin2x=4cos^(2...

[" 12."sin^(2)6x-sin^(2)4x=sin2x=4cos^(2)x sin4x],[" 14."sin2x+2sin4x+sin6x=cot x(sin5x-sin3x]

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sin2x + sin4x + sin6x=0

sin2x+2sin4x+sin6x= 4cos^(2)xsin4x

sin ^ (2) 6x-sin ^ (2) 4x = sin2x sin10x

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

sin ^(2) 6x - sin ^(2) 4x = sin 2x sin 10x

Prove that: sin^(2)6x-sin^(2)4x=sin2x sin10x

Prove that sin(2x)+2sin(4x)+sin(6x)=4cos^(2)xsin4x

sin 2 x + 2 sin 4x + sin 6x = 4 cos ^(2) x sin 4x