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Mathematics · 2025 · 1 mark
CBSE 2025 · Region 1 · Set 2 · Q7
If $\displaystyle \alpha+\beta=90^{\circ}$ and $\displaystyle \alpha=2 \beta$, then $\displaystyle \cos ^{2} \alpha+\sin ^{2} \beta$ is equal to :
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle \frac{1}{2}$
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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.