Question

8 A lookout tower has been erected on top of a mountain. At a distance of 5.8 km, theangle of elevation from the ground to the base of the tower is 15.7° and the angle ofelevation to the observation deck (on the top of the tower) is 15.9°. How high, to thenearest metre, is the observation deck above the top of the mountain?9 From a point A on level ground, the angle of elevation of the top of a building 50 mhigh is 45°. From a point B on the ground and in line with A and the foot of thebuilding, the angle of elevation of the top of the building is 60°. Find, in simplest surd, dista

Answer 1

8) A lookout tower has been erected on top of a mountain. At a distance of 5.8 km, theangle of elevation from the ground to the base of the tower is 15.7° and the angle ofelevation to the observation deck (on the top of the tower) is 15.9°. How high, to thenearest metre, is the observation deck above the top of the mountain?

Answer 2

9) From a point A on level ground, the angle of elevation of the top of a building 50 m high is 45°. From a point B on the ground and in line with A and the foot of the building, the angle of elevation of the top of the building is 60°. Find, in simplest surd
form, the distance from A to B.