Question

Find all angles Ө between 0º and 360º for which sinӨ = -0.5.
a.150° and 210°
b.30° and 150°
c.210° and 330°
d.30° and 330°

Answer 1

anyone get it?

Answer 2

what quadrant(s) is the sine of an angle negative?

Answer 3

btw... do you use the unit circle?

Answer 4

i dont know how to do this problem at all.. so ..

Answer 5

have you used the unit circle before?

Answer 6

this thing

Answer 7

yes....

Answer 8

yes then :)

Answer 9

sine of some angle represent the y-coordinate of a point on the unit circle....
since the y-coordinate you want is -.5 or -1/2, what angle corresponds to that?

Answer 10

angle 330?

Answer 11

there is 1 more....

Answer 12

angle 210 and 330 then? so the answer would be C.

Answer 13

yes...:)

Answer 14

thank yooooouuu