જો $\tan \theta + \sec \theta = e^x$ હોય,તો $\cos \theta$ ની કિંમત શું થાય?

  • A
    $\frac{e^x + e^{-x}}{2}$
  • B
    $\frac{2}{e^x + e^{-x}}$
  • C
    $\frac{e^x - e^{-x}}{2}$
  • D
    $\frac{e^x - e^{-x}}{e^x + e^{-x}}$

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પદાવલિ $\cos^2(A - B) + \cos^2 B - 2\cos(A - B)\cos A\cos B$ એ

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

જો $\csc A + \cot A = \frac{11}{2}$ હોય,તો $\tan A = $

જો $A = \cos^2 \theta + \sin^4 \theta$ હોય,તો $\theta$ ના તમામ મૂલ્યો માટે:

$(8 \sec^2 \theta + 2 \cos^2 \theta)$ નું ન્યૂનતમ મૂલ્ય કેટલું થાય?

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