CBSE 2025 · Region 5 · Set 3 · Q3 · 1 mark
The value of $\displaystyle \left(1-2 \sin ^{2} 60^{\circ}\right)$ is same as that of
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle -\sin 30^{\circ}$
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.