Respuesta :

The figure can be drawn as,

From the triangle ABC,

[tex]\begin{gathered} \sin 70=\frac{AB}{AC} \\ \sin 70=\frac{h}{400ft} \\ h=400\sin 70ft \\ h=375.87ft \\ \approx376ft \end{gathered}[/tex]

Thus, the required value of height is 376 ft.

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