A is standing at a point 15 metres away from the base of B’s house which is 15 metres high. What is the angle of elevations of the top?
A. 90°
B. 60°
C. 30°
D. 45°
Sol: Let BC denotes the height of the house.
Let Q be the angle of elevation
therefore, tanQ = BC / AC
= 15 m / 15m
= 1
tanQ = 1
Q = 450
Hence option D is the correct answer.
Let Q be the angle of elevation
therefore, tanQ = BC / AC
= 15 m / 15m
= 1
tanQ = 1
Q = 450
Hence option D is the correct answer.