A ladder 15m long is resting the against the window of a house. If it makes an angle of 60° with the window , find the height of the window and the distance of the foot of the ladder from the house.
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Step-by-step explanation:
In △ADC,
AD2+AC2=CD2
92+AC2=152
AC2=225−81
AC=12 m
In △BEC,
EC2=BC2+BE2
152=122+BC2
225−144=BC2
BC=9 m
Width of the road = AC+BC = 12+9 = 21 m
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