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$\cot 7\frac{1}{2}^{\circ} + \tan 67\frac{1}{2}^{\circ} - \cot 67\frac{1}{2}^{\circ} - \tan 7\frac{1}{2}^{\circ}$ ની કિંમત છે:

$\cos 15^{\circ} \cos 7.5^{\circ} \sin 7.5^{\circ}$ નું મૂલ્ય શું છે?

$\cos ^3 \theta + \cos ^3(120^{\circ} + \theta) + \cos ^3(\theta - 120^{\circ}) = $

કિંમત શોધો: $\cos^2 A(3 - 4\cos^2 A)^2 + \sin^2 A(3 - 4\sin^2 A)^2$

જો $\sec \theta = 1\frac{1}{4}$ હોય,તો $\tan \frac{\theta}{2} = $

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