यदि $\sin \theta + \cos \theta = 1$ है,तो $\sin \theta \cos \theta = $

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $0.5$

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यदि $\tan^2 \theta = 2\tan^2 \phi + 1$ है,तो $\cos 2\theta + \sin^2 \phi$ का मान ज्ञात कीजिए।

$\operatorname{cosec} 48^{\circ}+\operatorname{cosec} 96^{\circ}+\operatorname{cosec} 192^{\circ}+\operatorname{cosec} 384^{\circ} = $

$\mathbb{R}$ पर $4 \cos \left(x^2\right) \cos \left(\frac{\pi}{3}+x^2\right) \cos \left(\frac{\pi}{3}-x^2\right)$ के चरम मान क्या हैं?

${\left( \frac{\cos A + \cos B}{\sin A - \sin B} \right)^n} + {\left( \frac{\sin A + \sin B}{\cos A - \cos B} \right)^n}$ ($n$ एक पूर्णांक है) $=$

यदि $\alpha, \beta$ न्यून कोण इस प्रकार हैं कि $\sin \beta=2 \sin \alpha$ और $3 \cos \beta=2 \cos \alpha$,तो $\sec (\alpha+\beta)=$

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