prove tanA+tanB=sin(A+B)/cosAcosB

prove: sin(a+b)/cosacosb=tana+tanb

IF (TANA+TANB)=M AND (TANA-TANB)=N, THEN COT(A-B)=?

Prove the identity: tanA/secA+1 = secA-1/tanA Can u please explainit to me step by step?...

prove that tanA divided by the sinA equals the secA

prove sin(A+B)/sin(A-B)=(tanA+tanB)/(tanA-tanB)

1 .If tanA=1/3 and tanB=1/7 (both A and B are acute),calculate 50sin(2A +B) 2.1Prove that sin2A+2c...

if tanA=root2-1, prove that (secA.sinA tan squareA-cosecA) =(12-¡Ì5)/2

Prove: 1+(TanA/SinB)^2/1+(TanA/SinC)^2 = 1+(SinA/TanB)^2/1+(SinA/TanC)^2

If TanA=k.TanB prove that (k+1)sin(A-B)=(k-1)sin(A+B).

if tanA/tanB=k,prove that k+1/k-1=sin(A+B)/sin(A+B)

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