Please solve the 9 th question.
Please do not provide any link.

Please solve the 9 th question. Please do not provide any link. second, ;hthouse he angle Ise from a river f the top k is 600. bank, he Find : decimal wers is of of the 13. 14. second, which is 160 m high, is 450. Find the height of the first tower. The length of the shadow of a tower standing on level plane is found to be 2y metres longer when the sun's altitude is 300 than when it was 450. Prove that the height of the tower is .y(6 + 1) metres. An aeroplane flying horizontally 1 km above the ground and going away from the observer is observed at an elevation of 600. After 10 seconds, its elevation is observed to be 300; find the uniform speed of the aeroplane in km per hour. 15. From the top of a hill, the angles of depression of two consecutive kilometre stones, due east, are found to be 300 and 450 respectively. Find the distances of the two stones from the foot of the hill. [2007] XERCISE 22(C) 5. The radius of a circle is given as 15 cm and chord AR r.