Tg(п/4+а) если tg a=3/5

Question

Tg(п/4+а) если tg a=3/5

Answer 1

Tg(π/4 + α) = (tg π/4 + tg α)/(1 - tgπ/4 · tgα) =
 = (1 + 0.6)/(1 - 1·0.6) = 1.6/0.4 = 4