Question

Simplify sin(3pi - x)

Answer 1

sinx

Explanation:

hello :

note :

for all x in ℝ : 1) sin(x+2π) = sinx 2) sin(π-x) = sinx

in this exercice :

3π - x = 2π+(π - x)

sin(3π - x) = sin(2π +(π - x)) =sin(π-x) = sinx