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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 4 · Set 1 · Q15
The distance between the points ( a cos θ+ b sin θ, 0) and (0, a sin θ- b cos θ) is
The distance between the points $\displaystyle (\mathrm{a} \cos \theta+\mathrm{b} \sin \theta, 0)$ and $\displaystyle (0, \mathrm{a} \sin \theta-\mathrm{b} \cos \theta)$ is
Official answer
(A)
$\displaystyle \sqrt{\mathrm{a}^{2}+\mathrm{b}^{2}}$
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CBSE Class 10 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.