જો $A, B, C$ એ ત્રિકોણના ખૂણાઓ હોય,તો $\sum \frac{\cot A + \cot B}{\tan A + \tan B} = $

  • A
    $1$
  • B
    $2$
  • C
    $-1$
  • D
    $-2$

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$(\sec A + \tan A - 1)(\sec A - \tan A + 1) - 2\tan A = $

જો $\frac{\cos x}{a} = \frac{\cos (x + \theta)}{b} = \frac{\cos (x + 2\theta)}{c} = \frac{\cos (x + 3\theta)}{d}$ હોય,તો $\left( \frac{a + c}{b + d} \right)$ ની કિંમત શું થાય :-

જો $\tan \theta + \cot \theta = 2$ હોય,તો $\tan^{100} \theta + \cot^{100} \theta$ ની કિંમત શોધો.

જો $\cos A = \frac{3}{4}$ હોય,તો $32\sin \left( \frac{A}{2} \right)\sin \left( \frac{5A}{2} \right) = $

$\cos A + \cos (240^\circ + A) + \cos (240^\circ - A) = $

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