Задача 57889 ...

5f6a2444b931bd71f10f3620

14.02.2021 12:34:22

№23,5.Упростите выражение

23.5. 1) sin(90° - α) + cos(180° + α) + ctg(270° - α) + tg(360° - α);

2) cos(90° + α) - sin(180° + α) + ctg(270° + α) + tg(360° + α);

3) cos(3π/2 + α) - sin(π + α) + ctg(π/2 + α) + tg(2π + α);

4) sin(3π/2 - α) - cos(π + α) + tg(3π/2 + α) + ctg(2π + α).

6022c8ebe32b2976ffb885f7

14.02.2021 13:05:14

1)-sin(-90°+α)+cos(180°+α)+ctg(270°-α)+tg(360°-α)
2)cos(90°+α)-sin(180°+α)+ctg(270°+α)+tg(360°+α)
3)2sin(α)+ctg(π/2+α)+tg(2π +α)
4)tg(3π/2+α)+ctg(2π+α)