A ladder 15m long just reaches the top of vertical wall.If the ladder makes an angle 60° with the wall,find the height of the wall
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The length of the ladder= 15m
Angle between ladder and wall < BCA= 60 degrees
To find the height of the ladder we take cos of the angle.
cos 60 degree= h/15
or 1/2 = h/15
or h= 15/2=7.5cm
Hence the height of the tree is 7.5 cm.
Angle between ladder and wall < BCA= 60 degrees
To find the height of the ladder we take cos of the angle.
cos 60 degree= h/15
or 1/2 = h/15
or h= 15/2=7.5cm
Hence the height of the tree is 7.5 cm.
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