न्यूनकोण $\theta$ के लिए,यदि $\cos \theta = \sin \theta$ है,तो $2 \tan^{2} \theta + \sin^{2} \theta + 1 = \ldots$

  • A
    $\frac{5}{2}$
  • B
    $\frac{7}{4}$
  • C
    $\frac{5}{4}$
  • D
    $\frac{7}{2}$

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यदि $\sin A + \sin^2 A = 1$ है,तो व्यंजक $(\cos^2 A + \cos^4 A)$ का मान क्या है?

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यदि $\sec \theta = \frac{13}{5}$ है,तो $\cos \theta = \ldots \ldots \ldots \ldots$

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