$\cos ^{2} 75^{\circ}+\cos ^{2} 45^{\circ}+\cos ^{2} 15^{\circ}-\cos ^{2} 30^{\circ}-\cos ^{2} 60^{\circ}$ નું મૂલ્ય શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $\frac{1}{2}$
  • D
    $\frac{1}{4}$

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Similar Questions

જો $\theta+\phi=\frac{\pi}{4}$ હોય, તો $(1+\tan \theta)(1+\tan \phi)$ ની કિંમત કેટલી થાય?

જો $\frac{\sin(x+y)}{\sin(x-y)} = \frac{a+b}{a-b}$ હોય,તો $\frac{\tan x}{\tan y} = $

$\sin (x+y) \sec x \sec y=$

$\sin {163^\circ} \cos {347^\circ} + \sin {73^\circ} \sin {167^\circ} = $

જો $\cos (\theta+\phi)=\frac{3}{5}$ અને $\sin (\theta-\phi)=\frac{5}{13}$, જ્યાં $0 < \theta, \phi < \frac{\pi}{4}$, તો $\cot (2 \theta)$ ની કિંમત શોધો:

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