Advertisements
Advertisements
Question
cos2 θ = `3/4` ∴ θ = ______.
Options
60°
45°
30°
90°
MCQ
Fill in the Blanks
Advertisements
Solution
cos2 θ = `3/4` ∴ θ = 30°.
Explanation:
cos2 θ = `3/4`
cos θ = ± `sqrt3/2`
cos θ = `sqrt3/2`
θ = 30°
shaalaa.com
Is there an error in this question or solution?
