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A TV tower stands verically on the bank ...

A TV tower stands verically on the bank of a canal. From a point on the other bank directly opposite the tower, the angle of elevation of the top of the tower is `60^(@)`. From another point 20 m away from this point on the line joining this point to the foot of the tower, the angle of elevation of the top of the tower is `30^(@)`. Find the height of the tower and the width of the canal.

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The correct Answer is:
10 m
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A TV tower stands vertically on a bank of a canal. From a point on the other bank directly opposite the tower, the angle of elevation of the top of the tower is 60^(@) . From another point 20m away from this point on the line joining this point to the foot of the tower, the angle of elevation of the top of the tower is 30^(@) (see Figure ). Find the height of the tower and the width of the canal.

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