The angle of elevation of a jet plane from a point a on the ground is 60 degree.........1500root 3,find the speed of the jet plane
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Tan 60 = AD/ED
\sqrt3 = 1500 \sqrt3/ED
ED = 1500
Tan 30 = BC/EC
1/ \sqrt3 = 1500√3/EC
DE = EC - ED
4500-1500
= 3000
PLANE TRAVELS 3000 m in 15 sec.
speed = Dstance/Time
= 3000/15
200 m/s.
Jet plane speed = 200m/s.
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