જો દ્વિઘાત સમીકરણ $x^2 + px + q = 0$ ના બીજ અનુક્રમે $\tan 30^\circ$ અને $\tan 15^\circ$ હોય,તો $2 + q - p$ ની કિંમત શોધો.

  • A
    $0$
  • B
    $1$
  • C
    $2$
  • D
    $3$

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જો $\cos x + \cos^2 x = 1$ હોય,તો $\sin^2 x + \sin^4 x$ ની કિંમત શોધો.

જો $A = \sin 45^{\circ} + \cos 45^{\circ}$ અને $B = \sin 44^{\circ} + \cos 44^{\circ}$ હોય,તો

જો $\sin \theta = \frac{12}{13}$ જ્યાં $0 < \theta < \frac{\pi}{2}$ અને $\cos \phi = -\frac{3}{5}$ જ્યાં $\pi < \phi < \frac{3\pi}{2}$ હોય,તો $\sin(\theta + \phi)$ ની કિંમત શોધો.

જો $A, B, C$ એ ત્રિકોણના ખૂણાઓ હોય,તો $\sin^2 A + \sin^2 B + \sin^2 C - 2\cos A \cos B \cos C = $

$3\,\left[ {{{\sin }^4}\,\left( {\frac{{3\pi }}{2} - \alpha } \right) + {{\sin }^4}\,(3\pi + \alpha )} \right] - 2\,\left[ {{{\sin }^6}\,\left( {\frac{\pi }{2} + \alpha } \right) + {{\sin }^6}(5\pi - \alpha )} \right] = $

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