Question

If sin (theta) = 1/2 , which could not be the value of theta?
a. 30 degrees
b. 210 degrees
c. 150 degrees
d. 390 degrees

Answer 1

This is how you do it.

sin theta = 1/2
theta = sin-1 (1/2) = 30
theta = 30, (180-30)=150, (360+30)=390
therefore answer: B.

Answer 2

Well that is what I got but I am not Sure. Sorry if I get it wrong

Answer 3

principal value is 30

Answer 4

so it is 210?

Answer 5

I thinks so, Uhh Yea..

Answer 6

alright thanks !

Answer 7

You are very welcome

Answer 8

it CAN'T BE 210
frsure

Answer 9

What do you think it is @Nnesha ?

Answer 10

sin is positive so either it's in first or 2nd quadrant
cast rule!

Answer 11

and given sin value is positive so it should be in 1st and 2nd quadrant