Question

Question 1.
(A)
An aeroplane takes off at an angle of 30° with the horizontal ground . Find the height of the aeroplane above the ground when it has travelled 184m without changing direction .
(B)
The angle of elevation of the top of a vertical Cliff from a point 15 m away from the foot of Cliff is 60° . Find the height of the Cliff to the nearest metre .

Answer 1

Answer:

(A) 92m (B) 30m

Step-by-step explanation:

(A) h = s sin@

h = 184 sin 30°

h = 184 × 1/2

h = 92m

(B) h = x tan@

h = 15 tan 60°

h = 15 × √3

h = 15 × 1.732

h ~ 30m