यदि $\operatorname{cosec} A = \sqrt{10}$ है,तो $\sin A = \dots$

  • A
    $3$
  • B
    $\frac{1}{\sqrt{10}}$
  • C
    $\frac{1}{3}$
  • D
    $\frac{3}{\sqrt{10}}$

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यदि $\sin 70^{\circ} = \cos \theta$ है,तो $\theta = \ldots \ldots \ldots \ldots$ ($^{\circ}$ में)

$2 \sin ^{2} 30^{\circ} \cot 30^{\circ}-3 \cos ^{2} 60^{\circ} \sec ^{2} 30^{\circ} = \dots$

यदि $\sin \theta + \sin^2 \theta = 1$ है,तो $\cos^2 \theta + \cos^4 \theta = \dots$

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त्रिकोणमितीय अंतर्संबंधों के लिए निम्नलिखित में से कौन सा युग्म सही है?
$1. \cos \theta$ $a. \frac{\cos \theta}{\sin \theta}$
$2. \tan \theta$ $b. \frac{1}{\csc \theta}$
$3. \cot \theta$ $c. \frac{1}{\sec \theta}$
$4. \sin \theta$ $d. \frac{1}{\cot \theta}$
$e. \sin \theta \cdot \cos \theta$

$\sin^{2} 30^{\circ} - \tan 45^{\circ} + \cos^{2} 60^{\circ} - \cot 90^{\circ}$ का मान ........ है।

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