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 Form 4 Exam Standard Mathematics Paper 2 Questions and Answers

Three points O,A and B lie on a horizontal ground such that A is 40m North of O and B is 60m on a bearing #070^0# from A. At B a vertical tower stands so that the angle of elevation of the top of the tower from O is #20.3^0#.Calculate
a).the distance OB
b).the height of the tower.

 (8m 15s)
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