Question 71

The thread of a kite makes 60° angle with the horizontal plane. If the length of the thread be 80 m, then the vertical height of the kite will be

Solution

Given : AC is the thread of the kite = 80 m

To find : AB = $$h$$ = ?

Solution : In $$\triangle$$ ABC,

=> $$sin(60^\circ)=\frac{AB}{AC}$$

=> $$\frac{\sqrt{3}}{2}=\frac{h}{80}$$

=> $$h=80 \times \frac{\sqrt{3}}{2}$$

=> $$h=40\sqrt{3}$$ m

=> Ans - (D)

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