Correct Answer: Option D

Explanation

In the diagram give, \(\alpha\) 50^o(alternative angles)

tan\(\alpha\) = \(\frac{h}{6}\)

h = 6tan\(\alpha\)

= 6tan 50^o

= 6 x 1.1918

= 7.1508

= 7.15m (2d.p)

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