If sin θ = –1/2 for 0 o, the value of θ is
- A.
30o and 150o - B.
150o and 210o - C.
210o and 330o - D.
150o and 330o
Correct Answer: Option C
Explanation
sin θ = –1/2
= -0.5
θ = sin-1 (0.5)
θ = 30o
Since θ is negative
θ = 180 + 30 = 210o
θ = 360 – 30 = 330o
∴θ = 210o and 330o