вычислите: 2/tg22,5-ctg22,5

Question

вычислите: 2/tg22,5-ctg22,5

Answer 1

(2 / tg(22,5)) - ctg(22,5) = 1,79259099

Answer 2

2/sin22.5/cos22.5  - cos22.5/sin22.5=2cos22.5/sin22.5  - cos22.5/sin22.5=cos22.5/sin22.5=ctg22.5