જો $2\cos\theta + \sin\theta = 1$ હોય,તો $4\cos\theta + 3\sin\theta$ ની કિંમત કેટલી થાય?

  • A
    $3$
  • B
    $-5$
  • C
    $\frac{7}{5}$
  • D
    $(a)$ અને $(c)$ બંને

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