[" 14."sin2x+2sin4x+sin6x=4cos^(2)x sin4...

[" 14."sin2x+2sin4x+sin6x=4cos^(2)x sin4x],[" 15."cot4x(sin5x+sin3x)=cot x(sin5x-sin3x)]

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cot4x(sin5x+sin3x)= cotx(sin5x-sin3x)

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

prove that cot4x(sin5x+sin3x)=cot x(sin5x-sin3x)

Prove that cot4x(sin5x+sin3x)=cot x(sin5x-sin3x)

Prove that cot4x(sin5x+sin3x)=cot x(sin5x-sin3x)

Prove that cot4x(sin5x+sin3x)=cotx(sin5x-sin3x)

Prove that cot4x(sin5x+sin3x)=cotx(sin5x-sin3x)

cot 4x (sin 5x + sin 3x) = cot x (sin 5x - sin 3x)

cot 4x (sin 5x + sin 3x) = cot x (sin 5x - sin 3x)

cot 4x (sin 5x + sin 3x) = cot x (sin 5x - sin 3x)

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