MCQ
$\left(\sin 45^{\circ}+\cos 45^{\circ}\right)$ का मान है
  • A
    $\frac{\sqrt{3}}{2}$
  • $\sqrt{2}$
  • C
    1
  • D
    $\frac{1}{\sqrt{2}}$

Answer

Correct option: B.
$\sqrt{2}$
दिया गया है: $\sin 45^{\circ}+\cos 45^{\circ}$
$=\frac{1}{\sqrt{2}}+\frac{1}{\sqrt{2}}$
$=\frac{2}{\sqrt{2}}$
$\frac{2}{\sqrt{2}}$ का $\frac{\sqrt{2}}{\sqrt{2}}$ से गुणन करने पर
$\frac{2}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}}$
$\frac{2 \sqrt{2}}{2}$
$=\sqrt{2}$

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