Hey,
I was wondering if anyone could help me out with these two problems. They're from fitzpatrick ex 24 (b) qs 59 and 62.
59. Find tan x in terms of tan (θ) if tan θ =cos(θ +x)/cos(θ-x)
62. If tan(A) =k tan(B), show that (k-1)*sin (A+B)=(k+1)*sin(A-B)
thanx in advance :)