Asked by mary
Two boats are 70m and on opposite sides of a lighthouse.from the two boats,the angles of elevation of the lighthouse are 71 and 45 respectively.find the height of the lighthouse.
Answers
Answered by
Steve
draw a diagram. It shows that if the height is h, then
h cot71° + h cot45° = 70
h cot71° + h cot45° = 70
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