If `cosA=mcosB` then prove that `cot ((A+B)/2) = (m+1)/(m-1) tan ((B-A)/2)`

If cos A=m cos B then prove that cot((A+B)/(2))=(m+1)/(m-1)tan((B-A)/(2))

If cos A = m cos B, then prove that cot frac (A+B)(2)= (m+1)/(m-1) tan ((B-A)/2) .

If cosA=mcosB , then ............. A) cot ((A+B)/(2)) =(m+1)/(m-1) tan ((B-A)/(2)) B) tan ((A+B)/(2)) =(m+1)/(m-1) cot ((B-1)/(2)) C) cot ((A+B)/(2)) =(m+1)/(m-1) cot ((B-A)/(2)) D) None of these

If cos A=m cos B, then (1)cot((A+B)/(2))=(m+1)/(m-1)*tan((B-A)/(2))(2)tan((A+B)/(2))=(m+1)/(m-1)*cot((A-A)/(2))(3)cot((A+B)/(2))=(m+1)/(m-1)*tan((A-A)/(2))(4)tan((A-B)/(2))=(m+1)/(m-1)*cot((B-A)/(2))

If sin A = m sin B, "prove that" "tan" (A-B)/2 = (m-1)/(m+1) "tan" (A+B)/2

If cos A=m cos B, then cot((A+B)/(2))=(m+1)/(m-1)tan((B-A)/(2))

Prove that cot(A/2)=sinA/(1-cosA)

If cosA=kcos(A-2B) , prove that: tan(A-B)tanB= (1-k)/(1+k)

If cosA=kcos(A-2B) , prove that: tan(A-B)tanB= (1-k)/(1+k)

Sin A=m sin B,show that , tan((A-B)/2)=(m-1)/(m+1)tan((A+B)/2)