Question

Simplify sin(-4pi-x)

Answer 1

Explanation:

hello :

note :

for all x in ℝ : 1) sin(x+2kπ) = sinx ...k in Z 2) sin(-x) = -sinx

in this exercice :

sin(-4π-x)= sin(-x) = -sinx because : -4π = 2(-2)π (form : 2kπ when : k=-2)