Introduction to Trigonometry

Bihar Board Class 10 · Mathematics · 116 past questions

12 of 116 · show all

1. Q33 2024

   If $\sin(20^\circ + \theta) = \cos 30^\circ$ then the value of $\theta$ is

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2. Q34 2024

   If in $\triangle ABC$, $\angle C = 90^\circ$ then $\sin(A + B) =$

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3. Q35 2024

   $\sec^2 23^\circ - \tan^2 23^\circ + 2 =$

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4. Q36 2024

   If $x\cos\theta = 1$, $\tan\theta = y$ then the value of $x^2 - y^2$ is

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5. Q37 2024

   If $\tan\theta = \frac{3}{4}$ then $\sin\theta =$

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6. Q38 2024

   $\sqrt{\frac{1+\cos A}{1-\cos A}} =$

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7. Q39 2024

   $\tan 5^\circ \cdot \tan 25^\circ \cdot \tan 30^\circ \cdot \tan 65^\circ \cdot \tan 85^\circ =$

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8. Q40 2024

   $\cos 38^\circ \cos 52^\circ - \sin 38^\circ \sin 52^\circ =$

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9. Q41 2024

   $\frac{\text{cosec}\,42^\circ}{\sec 48^\circ} \times \frac{\cos 37^\circ}{\sin 53^\circ} =$

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10. Q42 2024

    If $\tan(\alpha+\beta)=\sqrt{3}$ and $\tan\alpha=\dfrac{1}{\sqrt{3}}$ then the value of $\tan\beta$ is

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11. Q43 2024

    $\sqrt{2}\left(\sin\dfrac{\pi}{4}+\cos\dfrac{\pi}{4}\right)=$

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12. Q44 2024

    If $a\cos\theta+b\sin\theta=4$ and $a\sin\theta-b\cos\theta=3$ then the value of $a^2+b^2$ is

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