જો $\alpha+\beta+\gamma=\pi$ હોય,તો પદાવલિ $\sin^2 \alpha+\sin^2 \beta-\sin^2 \gamma$ નું મૂલ્ય શું થાય?

  • A
    $2 \sin \alpha \sin \beta \sin \gamma$
  • B
    $2 \cos \alpha \sin \beta \sin \gamma$
  • C
    $2 \sin \alpha \cos \beta \sin \gamma$
  • D
    $2 \sin \alpha \sin \beta \cos \gamma$

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જો $A + B + C = \pi ,$ હોય તો $\tan ^2 \frac{A}{2} + \tan ^2 \frac{B}{2} + \tan ^2 \frac{C}{2}$ હંમેશા

જો $A+B+C=2S$ હોય,તો $\sin(S-A) \cos(S-B) - \sin(S-C) \cos S =$

$2 \sin^2 \theta + 8 \csc^2 \theta$ ની ન્યૂનતમ કિંમત (જ્યાં $\theta \in R$) શોધો:-

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

$1 + 4 \sin \theta + 3 \cos \theta$ ના અંતિમ મૂલ્યો (extreme values) કયા છે?

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