Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

If cos θ cosec 27° = 1; the value of θ is?

Options:

63°

27°

67°

65°

Correct Answer:

63°

Explanation:

cos θ cosec 27° = 1

⇒ cos θ.\(\frac{1}{sin 27°}\) = 1

⇒ cos θ = sin 27°  ( because cos θ = sin (90-θ))

⇒ 27 = 90 - θ or θ = 63°