One flies a kite with a thread 150 metre long. If the thread

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One flies a kite with a thread 150 metre long. If the thread of the kite makes an angle of 60° with the horizontal line, then the height of the kite from the ground (assuming the thread to be in a straight line) is

1. 50 metre
2. 75 √3 metre
3. 25 √3 metre
4. 80 metre

Correct Option: B

AB = Length of the thread = 150 metre
∆ BAC = 60°

In ∆ ABC,

sin 60° =	BC	⇒	√3	=	BC
	AB		2		150

⇒ BC = 150 ×	√3	= 75√3 metre
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