Question

Can someone explain this to me please thank you !!

Answer 1

The figure can be drawn as,

From the triangle ABC,

`\begin{gathered} \sin 70=(AB)/(AC) \\ \sin 70=(h)/(400ft) \\ h=400\sin 70ft \\ h=375.87ft \\ \approx376ft \end{gathered}`

Thus, the required value of height is 376 ft.