Welcome to your Angles of Elevation and Depression(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. A ladder of length 6 m leans against a vertical wall so that the base of the ladder is 2 m from the wall. Calculate the angle between the ladder and the wall.2022.8183119.52. From the top of a 20 m high tower, the angle of elevation of the top of a building is 60^{0} and the angle of depression of its foot is 45^{0}. What is the height of the building?120 m90 m55 m30 m3. A ladder of length 8 m rests against a wall so that the angle between that ladder and the wall is 31°. However far is the base of the ladder form the wall?6 m3.6 m4.1 m6. 3 m7.1 m4. The angle of elevation of the top of a tower from a point Q at ground level is 45°. If the tower is 20m high, how far is the bottom of the tower from Q?10m40m5m20m30m5. In the diagram below, an aeroplane, P, cruising at an altitude of 10km begins its landing at Changi Airport, denoted by C, at an angle of depression of 10°.find the distance CP, correct to 3 significant figures10.2km102km57.6km5.76km6. A balloon is pegged to the ground by a rope. The rope is 110m long, and the balloon is 70m horizontally along the ground from the peg. What is the angle of elevation from the peg to the basket of the balloon?295021587. In a ΔABC right angled at B, sin A = 1/2, if BC = 6 cm then the value of AC is:3cm12 cm9 cm6 cm8. From the top of a cliff 90 m high, the angles of depression of the top and bottom of a tower observed to be 30^{0} and 60^{0} respectively. What is the height of the tower?80 m20 m40 m60 m9. Two poles of heights 6 m and 11 m stands vertically upright on a plane ground. If the distance between their feet is 12 m, then what is the distance between their tops?12 m13 m11 m14 m10. The angle of elevation of the top of a building from a point 80m away on a level ground is 25°. Calculate the height of the building to the nearest metre.50m33m38m30m37m11. A man on the ground looking up at a plane, and a pilot looking down at the man on the ground. The plane is 300 metres off the ground, and the angle of depression is approximately 19 degrees. What is the angle of elevation to the nearest whole degree?1936854612. The shadow of a tower standing on level ground is found to be 40 m longer when the sun's altitude becomes 30^{0} and 45^{0}. Find the height of the tower.90 m120 m30 m55 m13. A man stands at the top of a building 40 meters tall. He observers that the angle of elevation of the top of a tower, 50 meters away, is 20 degrees. What is the height of the tower? 177 meters58.2 meters87 meters57.1 meters14. The string of a kite is 250 m long and it makes an angle of 60^{0} with the horizontal. What is the height of the kite? (Assume there is no slackness in the string)50√375√3125√3150√315. Find the distance of a boat from a lighthouse if the lighthouse is 100 meters tall, and the angle of depression is 6°. 951.490176585316. the diagram below, an aeroplane, P, cruising at an altitude of 10km begins its landing at Changi Airport, denoted by C, at an angle of depression of 10°.Find the horizontal distance between the aeroplane and Changi Airport when the aeroplane begins its landing, correct to 3 significant figures98.5km9.85km56.7km5.67km17. In a right angled triangle ABC, the sides of the triangle are A < B < C. The hypotenuse of the triangle isABCB²18. From the top of a tower of height 75 m, a guard sees two prisoners, both due west of him. If the angles of depression of the two prisoners are 10^{o} and 17^{o}, calculate the distance between them.200 m190 m220 m180 m210 m19. The angle of depression of a spot on the ground, from the top of a wall 10 meters tall, is 70 degrees. How far along the ground, is the spot from the base of the wall?29.2 meters27.5 meters10.6 meters3.6 meters20. Find x. 21.79.110.6411.921 out of 20Time is Up!