Question

If 2cos^2theta +sin theta-2=0 and 0°great than or equal to theta greater than or equal to 90°;find the value of theta​

Answer 1

Answer:

theta = 30°

hope it helps

Answer 2

Answer:

The value of theta(θ) is 30°

Step-by-step explanation:

2cos²θ+sinθ−2=0

or, 2−2sin²θ+sinθ−2−0

or, sinθ(−2sinθ+1)=0

Since θ=0, sinθ= 2/1

⇒θ=30°. [Since 0°<θ<90°]