angle of elevation of a tower from a point on the same level is the foot of the tower is 30 degree on advancing 150 metres towards the foot of the tower the angle of elevation of the tower becomes 60° so that the height of the tower is 129.9 use route to request 1.732
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Resposta:
Cos(60)=50/x
1/2= 50/x
____________
x=2.50
x=100
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