Question

sin (240° + 0) + cos (330° + 0) = 0.
be awaré !!!!wrong answers are to be reported​

Answer 1

LHS = sin (240°+θ) + cos(330° + θ)=sin

[270° − 30° + θ] + cos[360° − 30° + θ]=sin [270°−(30° + θ)] + cos [360° − (30° + θ)]=− cos (30° + θ) + cos (30° + θ)        

[As, sin(270°−θ) = − cos θ, cos (360° − θ) = cos θ]=0=RHS

HOPE IT IS HELPFUL

Answer 2

Please refer the attachment.........

Hope it helps...,.