Prove that .(sinAsinB)/(cosA+cosB)=(2tan(A/2)tan(B/2))/(1-tan^2(A/2)tan^2(B/2))
Jan 28, 2022 Prove that .(sinAsinB)/(cosA+cosB)=(2tan(A/2)tan(B/2))/(1-tan^2(A/2)tan^2(B/2)) Click to expand...
