WAEC - Mathematics (2013 - No. 17)

An object is 6m away from the base of a mast. The angle of depression of the object from the top pf the mast is 50o, Find, correct to 2 decimal places, the height of the mast
8.60m
7.51m
7.15m
1.19m

Explanation

Tan 50o = \(\frac{h}{6}\)

h = 6 tan 50

= 6 x 1.1917

= 7.1505

= 7.15

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