Assertion (A): 20 is not defined at θ = 45° . Reason (R): 90° ≠ 90° .

CBSE Class 10 Maths PYQ · Trigonometry · Specific Angles Expression · 1 Mark · March 2026 · Standard

Solve it yourself first — then press or tap Show Solution. Use for previous / next question.

571 Mark · March 2026 · Standard
Assertion (A): $\tan 20$ is not defined at $\theta = 45^{\circ}$.
Reason (R): $\sin 90^{\circ} \neq \cos 90^{\circ}$.
Show SolutionHide Solution
Sol. (B) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
← Previous questionNext question →