જો $A+B=\frac{\pi}{2}$ હોય,તો $\cos A \cdot \cos B$ ની મહત્તમ કિંમત કેટલી થાય?

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

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જો $\alpha+\beta=\frac{\pi}{2}$ અને $\beta+\gamma=\alpha$ હોય,તો $\tan \alpha$ ની કિંમત શું થાય?

જો $\cos \left( \frac{\alpha - \beta}{2} \right) = 2\cos \left( \frac{\alpha + \beta}{2} \right)$ આપેલ હોય,તો $\tan \frac{\alpha}{2} \tan \frac{\beta}{2}$ ની કિંમત શોધો.

વિધેય $f(x) = 3 \sin x + 4 \cos x$ ની મહત્તમ કિંમત શું છે?

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$\max_{0 \le x \le \pi} (16 \sin^2(\frac{x}{2}) \cos^3(\frac{x}{2}))$ ની કિંમત શોધો:

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