Question

Evaluate (a)Sin 4620 degree (b) sin 585 degree

Answer 1

Answer:

sin 4620 = sin(12×360 + 300) = sin 300= sin (360 -60) = sin (2pie - 60) = - sin 60 in 4th quadrant = - √3/2

sin (585) = sin (360 + 225) = sin 225 = sin (180+45) = - sin45 = -1/√2 in 3rd quadrant