Introduction to Trigonometry

CBSE Class 10 · Mathematics · 60 past questions

These are the board's own papers. 130 more board questions reprinted in the books we use in class are for signed-in students: sign in.

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Q13 2026 (Basic)

If $\sin(A - B) = \frac{1}{2}$ and $\tan(A + B) = \sqrt{3}$, $0° \le A + B < 90°$, $A > B$ then find the…
Q15 Sample paper 2026-27

If $\tan (A + B) = \sqrt{3}$ and $\tan (A - B) = \frac{1}{\sqrt{3}}$, $0° < A + B < 90°$, $A > B$, then the…
Q26 2025

If $\theta$ is an acute angle and $7 + 4\sin\theta = 9$, then the value of $\theta$ is…
Q41 2024

If $\cos(\alpha + \beta) = 0$, then value of $\cos\left(\frac{\alpha + \beta}{2}\right)$ is equal to…
Q45 2024 (Basic)

For what value of $\theta$, $\sin^2\theta + \sin\theta + \cos^2\theta$ is equal to 2 ?
Q58 2023 (Basic)

If $2\cos\theta = 1$, then the value of $\theta$ is