ધારો કે $k = 1, 2, 3, ...$ માટે ${f_k}(x) = \frac{1}{k}(\sin^k x + \cos^k x)$ છે. તો તમામ $x \in R$ માટે,$f_4(x) - f_6(x)$ ની કિંમત કેટલી થાય?

  • A
    $\frac{1}{12}$
  • B
    $\frac{1}{4}$
  • C
    $-\frac{1}{12}$
  • D
    $\frac{5}{12}$

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$\cot(7.5^{\circ}) + \tan(67.5^{\circ}) - \cot(67.5^{\circ}) - \tan(7.5^{\circ})$ ની કિંમત શું છે?

જો $x \sin^{2} 60^{\circ} - \frac{3}{2} \sec 60^{\circ} \tan^{2} 30^{\circ} + \frac{4}{5} \sin^{2} 45^{\circ} \tan^{2} 60^{\circ} = 0$ હોય,તો $x$ ની કિંમત શોધો.

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જો $A = 130^\circ$ અને $x = \sin A + \cos A$ હોય,તો

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