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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 6 · Set 1 · Q20
Statement A (Assertion) : For $\displaystyle 0<\theta \leq 90^{\circ}, \operatorname{cosec} \theta-\cot \theta$ and $\displaystyle \operatorname{cosec} \theta+\cot \theta$ are reciprocal of each other. Statement R (Reason) : $\displaystyle \operatorname{cosec}^{2} \theta-\cot ^{2} \theta=1$
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true; and Reason (R) is the correct explanation of Assertion (A).
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CBSE Class 10 Mathematics past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.