$\cos 20^{\circ} + 2 \sin^2 55^{\circ} - \sqrt{2} \sin 65^{\circ}$ નું મૂલ્ય શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $-1$
  • D
    $\frac{1}{2}$

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Similar Questions

જો $\sum_{r=1}^{50} \tan ^{-1} \frac{1}{2 r^{2}}=p$ હોય,તો $\tan p$ નું મૂલ્ય શું છે?

જો $\sin \theta + \operatorname{cosec} \theta = 2$ હોય,તો $\sin^{10} \theta + \operatorname{cosec}^{10} \theta$ નું મૂલ્ય કેટલું થાય?

$\tan 81^{\circ}-\tan 63^{\circ}-\tan 27^{\circ}+\tan 9^{\circ}$ ની કિંમત શોધો.

જો $\sin^{2}(10^{\circ}) \sin(20^{\circ}) \sin(40^{\circ}) \sin(50^{\circ}) \sin(70^{\circ}) = \alpha - \frac{1}{16} \sin(10^{\circ})$ હોય,તો $16 + \alpha^{-1}$ ની કિંમત શોધો.

જો $0 \leq A, B \leq \frac{\pi}{4}$ અને $\cot A + \cot B + \tan A + \tan B = \cot A \cot B - \tan A \tan B$ હોય,તો $\sin(A + B) = $

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