Question

(i) Prove that :- 1+cosA+sinA / 1+cosA-sinA = 1+sinA/cosA​

Answer 1

Step-by-step explanation:

I think u should factorisation of (1+cosA-sinA)

Answer 2

Step-by-step explanation:

d = 360 km

t = 5 h

speed = d/t = 360/ 5 = 72 km/h

For converting speed from km/h to m/s multiply the number by 5/18

Thus,

72 x (5/18) = 20 m/s

Thus, the speed of car is 20 m/s