Question

sin theta =-1/2 find theta using allied angles. a) theta is 210degree,b)330degree,c) both,d) non of this. with method.​

Answer 1

Answer:

a) 210

sin theta = 1/2 when theta 30.

if you watch the sine curve, when does it casts an negative 30(for -1/2). after 180 half cycle completion, negative 30 at 210