પદાવલિ $\frac{\cos 6x + 6\cos 4x + 15\cos 2x + 10}{\cos 5x + 5\cos 3x + 10\cos x}$ ની કિંમત શોધો.

  • A
    $\cos 2x$
  • B
    $2\cos x$
  • C
    $\cos^2 x$
  • D
    $1 + \cos x$

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જો $A, B, C$ એ ત્રિકોણના ખૂણાઓ હોય,તો $\sin 2A + \sin 2B - \sin 2C$ બરાબર શું થાય?

જો $A + B + C = 270^o$ હોય,તો $\cos 2A + \cos 2B + \cos 2C + 4\sin A \sin B \sin C = $

જો $\theta = 3\alpha$ અને $\sin \theta = \frac{a}{\sqrt{a^2 + b^2}}$ હોય,તો $a \operatorname{cosec} \alpha - b \sec \alpha$ પદાવલિનું મૂલ્ય શોધો.

જો $a \sin^2 x + b \cos^2 x = c$,$b \sin^2 y + a \cos^2 y = d$ અને $a \tan x = b \tan y$ હોય,તો $\frac{a^2}{b^2}$ ની કિંમત શોધો.

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જો $a \cos \theta + b \sin \theta = m$ અને $a \sin \theta - b \cos \theta = n$ હોય,તો ${a^2} + {b^2} = $

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