Cos^2(3P-a)/tg(a-2p)

Question

Cos^2(3P-a)/tg(a-2p)

Answer 1

Cos²(3π - α) / tg(α - 2π) = Cos²(π - α) / - tg(2π - α) = Cos²α / tgα = Cos³α/Sinα