Home
Class 12
MATHS
If cos^2 A - sin^2 A = tan^2 B then pro...

If ` cos^2 A - sin^2 A = tan^2 B` then prove that ` 2 cos^2 B -1 = tan^2 A`

Promotional Banner

Similar Questions

Explore conceptually related problems

If cos^(2)A-sin^(2)A=tan^(2)B then prove that 2cos^(2)B-1=tan^(2)A

If cos^(2)A-sin^(2)A=tan^(2)B, prove that 2cos^(2)B-1=cos^(2)B-sin^(2)B=tan^(2)A

Prove that (sin2A)/(1+cos2A)=tan A

If tan A=1//2, tan B=1//3 , then prove that cos 2A=sin2B .

If cos^2alpha-sin^2alpha=tan^2beta," then prove that "tan^2alpha=cos^2beta-sin^2beta .

If 3tan A tan B=1, prove that 2cos(A+B)=cos(A-B)

If tan B=(n sin A*cos A)/(1-n sin^(2)A), then prove that tan(A-B)=(1-n)tan A

If sin A=a cos B and cos A=b sin B then tan^(2)B =

cos ^ (2) A-sin ^ (2) A = (1-tan ^ (2) A) / (1 + tan ^ (2) A)

2cos^(2)B-1=tan^(2)A, then cos A cos B