If `A and B` are positive acute angles and `cos A = 1/7, cos B = 13/14`, then show that `A-B=60^0`.

If A and B are positive acute angles such that sin (A - B) =1/2 and cos (A + B) = 1/2 , then A and B are given by

If A,B are acute angles and sinA = 3/5, cosB =12/13 then find cos(A+B)

If angleA and angleB are acute angles such that cos A= cos B, then show then show that angleA=angleB .

If a,B,C are positive acute angles and tan A=(4)/(7),tan B=(1)/(7),tan C=(1)/(8), prove that A+B+C=45

If angle A and angle B are acute angles such that cos A= cos B then prove that angle A=angleB.

If A,B,C are positive acute angles and sin(B+C-A)=cos(C+A-B)=tan(A+B-C)=1 then A,B,C are

If A and B are acute angles such that tanA=cotB , then show that A+B =90^(@) .

If A and B are acute angles such that sin A =cos B , prove that (A+B)=90^@ .