Sin x + cos(2П+x)-cos(п/2-х)=1

Question

Sin x + cos(2П+x)-cos(п/2-х)=1

Answer 1

Решение
Sin x + cos(2П+x)-cos(п/2-х)=1
sinx + cosx - sinx = 1
cosx = 1
x =  2πn, n∈Z