The area of the region bounded by the \( y \)-axis, \( y=\cos x \) ...

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The area of the region bounded by the \( y \)-axis, \( y=\cos x \) and \( y=\sin x, 0 \leq x \leq \frac{\pi}{2} \) is
(A) \( \sqrt{2} \) sq units
(B) \( (\sqrt{2}+1) \) sq units
\( P \)
(C) \( (\sqrt{2}-1) \) sq units
(D) \( (2 \sqrt{2}-1) \) sq units
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