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 $f_n(x) = \frac{1}{2n} [\sin^{2n} x + \cos^{2n} x]$ है,तो $f_1(x) + f_2(x) - f_3(x) =$

$\operatorname{sech}^{-1}(\sin \theta)$ किसके बराबर है?

यदि $\tan \beta = \frac{\tan \alpha + \tan \gamma}{1 + \tan \alpha \tan \gamma}$ है,तो $\frac{\sin 2 \alpha + \sin 2 \gamma}{1 + \sin 2 \alpha \sin 2 \gamma} = $

$\cot 18^{\circ} \cdot \cot 36^{\circ}+1=$

यदि एक नियमित पंचभुज और एक नियमित दशभुज का परिमाप समान है,तो उनके क्षेत्रफलों का अनुपात क्या होगा?

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