Question

An aeroplane leaves an airport and flies due North at a speed of 1000 km/h.

At the same time another aeroplane leaves the same airport and flies due

East at a speed of 1200 km/h.
(i) Angle between the directions of the two aeroplanes is:

a) 900 b) 450

c) 1000 d) 1800

(ii) In 1 hour 30 minutes, the distance covered by the first aeroplane is:

a) 1000 km b) 1500 km c) 1600 km d) 200 km
(iii) In 1 hour 30 minutes, the distance covered by the second aeroplane is:

a) 1800 km b) 1500 km c) 1200 km d) 1000 km

(iv) The distance between the two aeroplanes after 2 hours is:

a) 300√61km b) 400√61km c) 400km d) 800km

(v) The theorem used to solve the above problem is:

a) Thales theorem

b) Area theorem

c) Mid-point theorem

d) Pythagoras theorem.
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Answer 1

Answer:

I)900

ii)In 1 hour 30 minutes, the distance covered by the first aeroplane is: 1500 km

iii) In 1 hour 30 minutes, the distance covered by the second aeroplane is: 1800 km

iv) 400 km

v)Pythagoras theorem.