જો $\frac{\cos 3A + \sin 3A}{\cos A - \sin A} = 1 - K \sin 2A$ હોય,તો $K$ ની કિંમત શોધો.

  • A
    $-2$
  • B
    $2$
  • C
    $3$
  • D
    $4$

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જો $A$ ત્રીજા ચરણમાં હોય અને $3 \tan A - 4 = 0$ હોય,તો $5 \sin 2A + 3 \sin A + 4 \cos A$ ની કિંમત શોધો.

જો $y = 3\,\sin\,x + 4\,\cos\,x$ હોય,તો $y$ નું મહત્તમ મૂલ્ય શોધો.

$\left( {1 + \cos \frac{\pi }{8}} \right)\,\left( {1 + \cos \frac{{3\pi }}{8}} \right)\,\left( {1 + \cos \frac{{5\pi }}{8}} \right)\,\left( {1 + \cos \frac{{7\pi }}{8}} \right) = $

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નીચેનામાંથી કયું સાચું છે?

જો $\alpha + \beta - \gamma = \pi$ હોય,તો $\sin^2 \alpha + \sin^2 \beta - \sin^2 \gamma = $

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