Question

- 9cos П/2+3sinП/2-3ctg5П/4-5tg0

Answer 1

- 9 CosП/2 + 3 SinП/2 - 3 ctg 5П/4 - 5 tg0 = - 9 * 0 + 3 * 1 - 3ctg(П + П/4) -
- 5 * 0 = 3 + 3ctg П/4 = 3 + 3 * 1 = 6