Page 1 :
‘ EXERCISE 12 (B), (From Board Papers), Group A (1 mar, , slevation of the top ofa tower §, gle of elevation F a tower from a point 8, ne ane ; 5 point on the grou, 1 THe fe foot of the tower is 45°. What is the height of the teres, ‘time of the day, the length of the shadow o Hei, 2, AtSO™ jkitude at that time? eight What or, a ang of two poles, of heights 2, , , , , , , , , , , , > mand 35 m are connected by a wir, , of 30° at the top of 25 m pole. Find the, , , , k, ich makes an angle, , , , ofelevation ¢ length of the wire C.B.S.E. 2011C), , V3 times the he, , ye length of shadow of a tower on the plane ground is BE thastowes, , , , 41, + ad the angle of elevation of the sun., ind the angl, , der 15 m long just reache, , , , op of a vertical wall. If the ladder makes ai, ht of the wall? «, , * ith the wall, then, , , , t is the he, , , , , , , , , , , , , , 4 Theangle of depression of a car, standing e ground, from the toy revere, What is the distance of the car from the base of the tower? CBSE 3, , . nakes an angle of 60° with the ground when placed against a wall. If the foot of th, , ladder is 2 m away from the wal hat is the | f the ladder? B.S.E. 2014, 26, , §. The tops of two towers of height x and y, standing on level ground, subtend angles of 30° and, respectively at the centre of the line joining their feet. Find x: y. (C.B.S.E. 2015, , A, In the adjoining figure, a tower AB is 20 m high and BC, its, shadow on the ground, is 20/3 m long. Find th altitude, , 10. In the, , , , adjoining figure, AB is 6 m, inclined at an angle of 60° to the horizontal and reaches upto a, Point D of pole. If AD = I, , , , , , 54 m, find the length of the ladde, , (Use V3, , , , v 60°, B