cos2A cos2 theta+sin^(2)(A-B)-sin^(2)(A+B)=cot(2A+2B)

Prove that : cot^(2) A - cot^(2) B = (cos^(2) A - cos^(2) B)/ (sin^(2) A sin^(2) B) = cosec^(2) A - cosec^(2)B

sin^(2) A cos^(2)B + cos ^(2) A sin^(2) B + sin^(2) A sin^(2) B+ cos^(2) A cos^(2) B=

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

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

The value of sin^2 A cos^2 B + cos^2 A cos^2 B+sin^2 A sin^2 B + cos^2A sin^2B is ……..

(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)

If f(theta)=det[[sin^(2)A,cot A,1sin^(2)B,cos B,1sin^(2)B,cos B,1sin^(2)C,cos C,1]], then (a) sin^(2)A+sin B+c(b)cot A cot B cot C(c)sin^(2)A+sin^(2)B+sin^(2)C(d)0

sin^(2)A cos^(2)B-cos^(2)A sin^(2)B=sin^(2)A-sin^(2)B

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

2sin^(2)B+4cos(A+B)sin A sin B+cos2(A+B)=