Introduction to Trigonometry

Bihar Board Class 10 · Mathematics · 116 past questions

12 of 116 · show all

1. Q1 2026

   If $\sin\theta = \frac{45}{53}$ then $\cos\theta =$

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2. Q2 2026

   $\frac{\sin 29^\circ}{\cos 61^\circ} =$

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3. Q3 2026

   Which of the following options is not equal to unity ?

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4. Q4 2026

   The value of $\cos\theta$ in the form of $\sin\theta$ is

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5. Q5 2026

   If $\sec\theta=\text{cosec}\,\theta$ then $\theta =$

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6. Q6 2026

   $\sin^2 30^\circ + \cos^2 60^\circ - \cot^2 45^\circ =$

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7. Q7 2026

   If $\sqrt{3}\tan\theta = 1$ then $\theta =$

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8. Q8 2026

   If $\cot A + \frac{1}{\cot A} = 2$ then $\tan^2 A + \frac{1}{\tan^2 A} =$

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9. Q9 2026

   $\sin^4\theta - \cos^4\theta =$

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10. Q10 2026

    If $\sin\theta+\sin^2\theta=1$ then $\cos^2\theta+\cos^4\theta=$

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11. Q11 2026

    $\dfrac{1+\tan^2 A}{1+\cot^2 A}=$

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12. Q12 2026

    If $\tan\theta+\cot\theta=5$ then $\tan^2\theta+\cot^2\theta=$

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