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$\tan \alpha + 2 \tan 2 \alpha + 4 \tan 4 \alpha + 8 \cot 8 \alpha = $

જો $\sin \theta = \frac{3}{5}$ અને $\theta$ પ્રથમ ચરણમાં નથી,તો $15 \sin 2 \theta - 20 \cos 2 \theta - 7 \tan 2 \theta = $

જો $\frac{\sec 8\theta - 1}{\sec 4\theta - 1} = \frac{a + b \tan^2 2\theta}{1 + c \tan^2 2\theta + d \tan^4 2\theta}$ (જ્યાં $\theta \neq \frac{n\pi}{16}, n \in I$),તો $(a - b + c - d)$ ની કિંમત શોધો.

$\frac{1-\sin \theta+\cos \theta}{1-\sin \theta-\cos \theta} = $

જો $3 \sin \theta = 2 \sin 3 \theta$ અને $0 < \theta < \pi$ હોય,તો $\sin \theta =$

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