જો $\cos 40^\circ = x$ અને $\cos \theta = 1 - 2x^2$ હોય,તો $0^\circ$ અને $360^\circ$ ની વચ્ચે $\theta$ ના શક્ય મૂલ્યો કયા છે?

  • A
    $100^\circ$ અને $260^\circ$
  • B
    $80^\circ$ અને $280^\circ$
  • C
    $280^\circ$ અને $110^\circ$
  • D
    $110^\circ$ અને $260^\circ$

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Similar Questions

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

જો $\sin \alpha = \frac{-3}{5}$ જ્યાં $\pi < \alpha < \frac{3\pi}{2}$ હોય,તો $\cos \frac{\alpha}{2} = $

$\frac{\cot ^2 15^{\circ}-1}{\cot ^2 15^{\circ}+1} = $

$\cos \frac{\pi}{2^2} \cdot \cos \frac{\pi}{2^3} \cdot \dots \cdot \cos \frac{\pi}{2^{10}} \cdot \sin \frac{\pi}{2^{10}}$ ની કિંમત શોધો.

સાબિત કરો કે $\tan 4x = \frac{4 \tan x (1 - \tan^2 x)}{1 - 6 \tan^2 x + \tan^4 x}$.

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