Решения 2 cos 60°-ag45°-sis270°

Question

Решения 2 cos 60°-ag45°-sis270°

Comments

2 cos 60°-ag45°-sis270°

Answer 1

2 cos 60°- tg45°- sin270° = 2*(1/2) - 1 - sin(180° +  90°) = 1 - 1 + 1 = 1