/ A TV tower stands vertically on a bank-of a canal. From a point on the otherbank directly opposite the tower, theangle of elevation of the top of thetower is 60°. From another point 20 maway from this point on the line joingthis point to the foot of the tower, theangle of elevation of the top of the Dtower is 30° (see Fig. 9.12). Find the20mheight of the tower and the width ofthe canal.30CB

/ A TV tower stands vertically on a bank-of a canal. From a point on t

1.	/ A TV tower stands vertically on a bank-of a canal. From a point on the otherbank directly opposite the tower, theangle of elevation of the top of thetower is 60°. From another point 20 maway from this point on the line joingthis point to the foot of the tower, theangle of elevation of the top of the Dtower is 30° (see Fig. 9.12). Find the20mheight of the tower and the width ofthe canal.30CB
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