Q. cos(90° − θ) is equal to:

(A) sin θ
(B) cos θ
(C) tan θ
(D) sec θ

✅ Correct Answer: (A) sin θ

Explanation: By the co-function identity, cos(90° − θ) = sin θ.

Published by Roshan ⭐ 3.43K Points at 05-Jul-2026 12:26 pm in Math

Explanation by: Roshan

By the co-function identity, cos(90° − θ) = sin θ.

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