$5 \cos \theta + 3 \cos \left( \theta + \frac{\pi}{3} \right) - 1$ ની મહત્તમ કિંમત શોધો.

  • A
    $5$
  • B
    $6$
  • C
    $7$
  • D
    $8$

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જો $\sqrt x + \frac{1}{{\sqrt x }} = 2\cos \theta$ હોય,તો ${x^6} + {x^{ - 6}} = $

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$\sin 50^\circ - \sin 70^\circ + \sin 10^\circ = $

જો $\sin \alpha = \frac{8}{17}, 0 < \alpha < 90^{\circ}$ અને $\tan \beta = \frac{5}{12}, 0 < \beta < 90^{\circ}$ હોય,તો $\cos (\alpha - \beta)$ ની કિંમત શોધો.

$\cos 15^\circ - \sin 15^\circ$ નું મૂલ્ય કેટલું થાય?

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