$(\sin \theta+\cos \theta)^{2}+(\sin \theta-\cos \theta)^{2} = \dots$

  • A
    $4 \sin \theta \cos \theta$
  • B
    $2$
  • C
    $1$
  • D
    $0$

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Similar Questions

$\frac{\cos ^{2} 40^{\circ}+\cos ^{2} 50^{\circ}}{\sin ^{2} 40^{\circ}+\sin ^{2} 50^{\circ}}=\ldots \ldots \ldots \ldots$

यदि $\sec 4A = \operatorname{cosec}(A - 20^\circ)$ है,जहाँ $4A$ एक न्यून कोण है,तो $A$ का मान $\ldots \ldots \ldots \ldots$ है। ($^\circ$ में)

सिद्ध कीजिए कि,
$\frac{\sin \theta}{1+\cos \theta}+\frac{1+\cos \theta}{\sin \theta}=2 \operatorname{cosec} \theta$

यदि $\operatorname{cosec} \theta = \frac{2}{\sqrt{3}}$ है,तो $\theta = \ldots$ ($^\circ$ में)

सिद्ध कीजिए कि $\sin^{6} \theta + \cos^{6} \theta + 3 \sin^{2} \theta \cos^{2} \theta = 1$.

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