From 40m away from the foot of a tower, the angle of elevation

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From 40m away from the foot of a tower, the angle of elevation of the top of the tower is 600 . What is the height of the tower?

AB = Tower = h metre
BC = 40 metre

∴ tanθ =	AB
	BC

⇒ tan60° =	h
	40

⇒ √3 =	h
	40

⇒ h = 40√3 =	40√3 × √3
	√3

=	120	metre
	√3

	130	m.
	√7