Question

The value of sin theta+ cos (90+ theta) + sin (180-theta)+ sin (180+theta) is.

Answer 1

Answer:

sin∅ + cos(90°+∅) + (sin 180° -∅) +sin(180°+∅)=sin∅ - sin ∅ + sin∅ - sin∅=0. Note:At odd multiples of 90° the function changes.