यदि $\sin ^{2}(3 x+30^{\circ})+\cos ^{2}(2 x+45^{\circ})=1$ है,तो $x = \dots$ ($^{\circ}$ में)

  • A
    $0$
  • B
    $15$
  • C
    $30$
  • D
    $60$

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

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यदि $\operatorname{cosec} \theta = \sqrt{2}$ है,तो $\tan \theta$ का मान ज्ञात कीजिए:

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

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