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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 5 · Set 2 · Q20
Assertion (A) : For an acute angle $\displaystyle \theta$, $\displaystyle \sec \theta=3 \Rightarrow \tan \theta=2 \sqrt{2}$.
Reason (R) : $\displaystyle \sec ^{2} \theta=1-\tan ^{2} \theta$ for all values of $\displaystyle \theta$.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Assertion (A) is true, but Reason (R) is false.
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CBSE Class 10 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.