यदि $\operatorname{cosec} \theta + \cot \theta = 5$ है, तो $\sin \theta = $

  • A
    $\frac{1}{5}$
  • B
    $\frac{5}{26}$
  • C
    $\frac{5}{13}$
  • D
    $\frac{1}{13}$

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यदि $(\sec \alpha + \tan \alpha )(\sec \beta + \tan \beta )(\sec \gamma + \tan \gamma ) = \tan \alpha \tan \beta \tan \gamma $ है,तो $(\sec \alpha - \tan \alpha )(\sec \beta - \tan \beta )(\sec \gamma - \tan \gamma ) = $

योगफल ज्ञात कीजिए: $\sin^2(3^{\circ}) + \sin^2(6^{\circ}) + \sin^2(9^{\circ}) + \dots + \sin^2(84^{\circ}) + \sin^2(87^{\circ}) + \sin^2(90^{\circ})$

यदि $\alpha, \beta, \gamma, \delta$ परिमाण के बढ़ते क्रम में सबसे छोटे धनात्मक कोण हैं जिनका ज्या (sine) मान धनात्मक राशि $k$ के बराबर है,तो $4\sin \frac{\alpha}{2} + 3\sin \frac{\beta}{2} + 2\sin \frac{\gamma}{2} + \sin \frac{\delta}{2}$ का मान किसके बराबर है?

यदि $\frac{3\pi}{4} < \alpha < \pi$ है,तो $\sqrt{\csc^2 \alpha + 2\cot \alpha}$ का मान क्या होगा?

$2 \sin(\frac{\pi}{8}) \sin(\frac{2\pi}{8}) \sin(\frac{3\pi}{8}) \sin(\frac{5\pi}{8}) \sin(\frac{6\pi}{8}) \sin(\frac{7\pi}{8})$ का मान है:

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