Question

Simplify sin(-4pi-x)

Answer 1

Answer:

Step-by-step 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)