" 6."(sin A+sin2A)/(cos A-cos2A)=cot(A)/(2)

(sin A-sin B)/(cos B-cos A)=cot((A+B)/(2))

prove that (sin2A)/(1-cos2A)=cot A

(sin 2x - sin 2y)/(cos 2y-cos 2x) = cot (x+y)

prove that: (sin2x-sin2y)/(cos2y-cos2x)=cot(x+y)

Prove the following identities : (sin A + cos A)/ (sin A - cos A) + (sin A - cos A)/ (sin A + cos A) = (2)/ (2 sin^(2) A - 1)

Prove that (1)sin2A=2sin A cos A(2)cos2A=cos^(2)A-sin^(2)A

Prove that : (sin A+cos A)/(sin A-cos A)+(sin A-cos A)/(sin A+cos A)=(2)/(sin^(2)-cos^(2)A)

Prove that: (sin A + cos A)/(sin A - cos A) + (sin A - cos A)/(sin A + cos A) = (2)/(sin^(2)A-cos^(2)A)=(2)/(2sin^(2)A-1)=(2)/(1-2 cos^(2)A) .

Prove that ( sin 2 A )/( 1 - cos 2 A) = cot A

Prove that: (sin5A cos2A-sin6A\ cos A)/(sin A\ sin2A-cos2A cos3A)=t a n A