9.1,11,12

Some Applications of Trigonometry : Some Applications of Trigonometry CHAPTER - 9 EXERCISE - 9.1

QUESTION 11 :-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 the elevation of the top of the tower is 60o. 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 30o. Find the height of the tower and width of the canal. : QUESTION 11 :- 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 the elevation of the top of the tower is 60o. 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 30o. Find the height of the tower and width of the canal.

QUESTION 12:-From the top of a 7m high building, the angle of elevation of the top of a cable tower is 60o and the angle of depression of its foot is 45o. Determine the height of the tower. : QUESTION 12:- From the top of a 7m high building, the angle of elevation of the top of a cable tower is 60o and the angle of depression of its foot is 45o. Determine the height of the tower.

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