Question

Answer Any 3
1. The angle of elevation of the top of a tower , from a point on the ground which is 30 m away from the foot of the tower is 30°.     Find the height of the tower.                                           
2. A tree 45 m tall, stands on one bank of a river. From the top of this tree, a rock on the other bank of the tree is seen at an angle of       depression of 60°. calculate the width of the river correct to 2 decimal places, if √3 = 1.732.                           
3. From the top of a 7m high building, the angle of elevation of the top of a cable tower is 60°  , and the angle of depression of its foot is     45°. Determine the height of the tower.                                     
4. The angles of depression of the top and bottom of a building 50m high, as observed from top of a tower are 30° and 60° respectively.    Find the height of the tower and also the horizontal distance between the building and the tower.                       ​

Answer 1

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