Question

Could someone please answer the following question?

Answer 1

Answer:

See below

Step-by-step explanation:

4 sin^2 -1 =0

sin^2 = 1/4          Take sqrt of both sides

sin = ± 1/2       < ===== this is likely where he went wrong (forgot + - )

 answer:  pi/6    5pi/6    7 pi/6     11pi/6