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(cos 9x - cos 5x)/(sin 17x - sin 3x) = (...

`(cos 9x - cos 5x)/(sin 17x - sin 3x) = (-sin 2x)/(cos 10x)`

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(cos 9x - cos 5x )/( sin 17 x- sin 3x )=- (sin 2x)/( cos 10x )

(cos 9x - cos 5x )/( sin 17 x- sin 3x )=- (sin 2x)/( cos 10x )

(cos 9x - cos 5x )/( sin 17 x- sin 3x )=- (sin 2x)/( cos 10x )

(cos 9x - cos 5x )/( sin 17 x- sin 3x )=- (sin 2x)/( cos 10x )

Prove that (cos 9 x-cos 5 x)/(sin 17 x-sin 3 x)=-(sin 2 x)/(cos 10 x)

Prove that: (cos9x-cos5x)/(sin 17 x-sin3x)=\ -(sin2x)/(cos 10 x)

Prove the following: (cos9x -cos5x)/(sin17x-sin3x)=-(sin2x)/(cos10x)

Prove that (cos9x —cos5x)/(sin17x-sin3x)=(-sin2x)/(cos10x) .

Prove that: (cos9x-cos5x)/(sin17 x-sin3x)=-(sin2x)/(cos10 x)

Prove that :(cos9x-cos5x)/(sin17x-sin3x)=(-sin2x)/(cos10x)