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When observer at a distance of 12m from ...

When observer at a distance of `12m` from a tree looks at the top of the tree, the angle of elevation is `60^(@)`. What is the height of the tree?
`(sqrt(3)=1.73)`

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In the figure
AB represents the tree
C is the position of the observer

`/_ACB` is the angle of elevation
`BC=12m` and `/_ACB=60^(@)`
In right angled `DeltaABC`
`tan60^(@)=(AB)/(BC)`.............(By definition)
`sqrt(3)=(AB)/12`
`:.AB=12sqrt(3)`
`AB=12xx1.73`
`AB=20.76m`
Height of the tree is 20.76m.
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