यदि $\tan \theta = 1$ है,तो $\sin \theta \cdot \cos \theta = \dots$

  • A
    $2$
  • B
    $1$
  • C
    $\frac{1}{2}$
  • D
    $\frac{1}{4}$

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$2A$ एक न्यून कोण का माप है और $\sec 2A = \operatorname{cosec}(A - 42^\circ)$ है,तो $A$ का मान $\ldots \ldots \ldots \ldots$ है। ($^\circ$ में)

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