1. What do you call to an angle from the horizontal to the line of sight of the observer to the object below? a. Line of sight c. Angle of Depression b. Angle of Elevationd. Imaginary sight 2. What do you call to an angle from the horizontal to the line of sight of the observer to the object above? a. Line of sight c. Angle of Depression b. Angle of Elevationd. Imaginary sight 3-4. Refer to the given problem below to answer the following questions: From the top of a vertical cliff 52 m high, the angle of depression of an object that is level with the base of the cliff is 39°. 3. What expression will be used to answer the question? a. sin39° C. tan39° b. cos39° d. csc39° 4. How far is the object from the base of the cliff? c. 64.21 d. 61.34 a. 0.6421 b. 0.6134 5. A man who is 4 m tall stands on horizontal ground 43 m from a tree. The angle of elevation of the top of the tree from his eyes is 22'. Estimate the height of the tree. a. 0.2137 meters c. 0.1373 meters b. 21.37 meters d. 13.73 meters