5× sin30гр-3tg45гр+4× cos60гр

Question

5× sin30гр-3tg45гр+4× cos60гр

Comments

2.5-3+2

Answer 1

Sin 30 = 1/2
Tg45= 1
Cos60= 1/2
5 * 0.5 - 3 * 1 +4 * 0.5 = 2.5 -3 + 2= 1.5