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The length of the string of a kite flying $50$ m above the ground with an elevation of $60^{\circ}$ is :
- (a)$\frac{100}{\sqrt{3}}$ m
- (b)$100\sqrt{3}$ m
- (c)$150$ m
- (d)$\frac{50}{\sqrt{3}}$ m
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(A) $\frac{100}{\sqrt{3}}$ m