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Mathematics · 2023 · 1 mark
CBSE 2023 · Region 6 · Set 1 · Q16
If θ is an acute angle of a right angled triangle, then which of the following equation is not true?
If $\displaystyle \theta$ is an acute angle of a right angled triangle, then which of the following equation is not true ?
Official answer
(D)
$\displaystyle \tan ^{2} \theta-\sec ^{2} \theta=1$
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CBSE Class 10 Mathematics past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.