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" (i) "sin A,cos A...

" (i) "sin A,cos A

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(sin^(2)A-sin^(2)B)/(sin A cos A-sin B cos B) is equal to (a) sin A cos A-sin B cos Btan(A-B)(b)tan(A+B)cot(A-B)(d)cot(A+B)

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

(sin A+cos A)/(sin A-cos A)+(sin A-cos A)/(sin A+cos A)=(2)/(sin^(2)A-cos^(2)A) {Prove It}

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 (sin A+cos A)(1-sin A cos A)=sin^(3)A+cos^(3)A

(sin^(3)A+cos^(3)A)/(sin A+cos A)+(sin^(3)A-cos^(3)A)/(sin A-cos A)=2

(cos A + sin A )/( cos A - sin A) - (cos A - sin A )/(cos A + sin A ) = 2 tan 2 A.

(1+ sin A- cos A)/( 1+ sin A + cos A)=

"(1+sin A+cos A)/(1+sin A-cos A)=