$\cot \theta \cdot \tan \theta = \dots$

  • A
    $\cot^{2} \theta + \tan^{2} \theta$
  • B
    $0$
  • C
    $\sin \theta \cdot \cos \theta$
  • D
    $1$

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'True' (सत्य) या 'False' (असत्य) लिखिए और अपने उत्तर का औचित्य बताइए।
$(\tan \theta+2)(2 \tan \theta+1)=5 \tan \theta+\sec ^{2} \theta$

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

सिद्ध कीजिए कि $\frac{1+\sec \theta-\tan \theta}{1+\sec \theta+\tan \theta}=\frac{1-\sin \theta}{\cos \theta}$

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$\sec (90^\circ - \theta) = \dots$

यदि $\sec \theta = \frac{5}{3}$ है,तो $\tan \theta = \ldots$

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