Kites

Boys run kite on a cable of 68 meters long. What is the kite altitude, if the angle from the horizontal plane is 72°?

Correct answer:

h =  65 m

Step-by-step explanation:

$$\begin{gathered} l=68\text{ m } \\ \sin A=h:l \\ h=l\cdot \sin (72\mathrm{°}\to \text{ rad})=l\cdot \sin (72\mathrm{°}\cdot {\displaystyle \frac{\pi }{180}})=68\cdot \sin (72\mathrm{°}\cdot {\displaystyle \frac{3.1415926}{180}})=65=65\text{ m} \end{gathered}$$

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