II. A TV tower stands vertically on a hunkof 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 jongthis point to the foot of the lower theangle of elevation of the top of thetower is 30see Fig. 9. 121. Find theheight of the tower and the width ofthe canal19F120mFig. 9.12

II. A TV tower stands vertically on a hunkof a canal From a point on t

1.	II. A TV tower stands vertically on a hunkof 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 jongthis point to the foot of the lower theangle of elevation of the top of thetower is 30see Fig. 9. 121. Find theheight of the tower and the width ofthe canal19F120mFig. 9.12
Answer» BC=10m is the right answer