જો $\sin \theta + \sin^2 \theta = 1$ હોય,તો $\cos^2 \theta + \cos^4 \theta = \dots$

  • A
    $1$
  • B
    $\cos^2 \theta \cdot \sin^2 \theta$
  • C
    $2$
  • D
    $1 + \cos^2 \theta$

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સાબિત કરો કે,
$\frac{\sin \theta}{1+\cos \theta}+\frac{1+\cos \theta}{\sin \theta}=2 \operatorname{cosec} \theta$

સાબિત કરો કે,$(\sin \alpha+\cos \alpha)(\tan \alpha+\cot \alpha)=\sec \alpha+\operatorname{cosec} \alpha$

જો $\tan \theta + \sec \theta = l$ હોય,તો સાબિત કરો કે $\sec \theta = \frac{l^{2} + 1}{2l}$.

પદાવલિનું મૂલ્ય શોધો: $8 \sin^{2} 45^{\circ} - 2 \tan^{2} 60^{\circ} + 3 \cot^{2} 30^{\circ} - 2 \cos^{2} 45^{\circ}$

જો $\cos \theta = \frac{15}{17}$ હોય,તો $\operatorname{cosec} \theta + \cot \theta$ ની કિંમત ......... છે.

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