Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If 4 cos2α - 3 = 0 , find the value of α .

Options:

30°

60°

90°

45°

Correct Answer:

30°

Explanation:

4 cos2α - 3 = 0

cos2α = \(\frac{3}{4}\) 

cosα = \(\frac{\sqrt {3}}{2}\)

α = 30°