CBSE 2025 · Region 4 · Set 3 · Q17 · 1 mark
$\displaystyle \sec \mathrm{A}=2 \cos \mathrm{~A}$ is true for $\displaystyle \mathrm{A}=$
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 45$°
Introduction to TrigonometryTrigonometric Ratios of Some Specific AnglesApplymcqeasy
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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.