Question

Angular distance of sun from earth is 16 min if d of earth from sun is 1.49*10^11 m find diameter of sun

Answer 1

Answer:

Given D=1.496*10^11m

Angukar distance is =2000=2000/60*60=0.55

As the angle is very small the traingle is approximately right angle triangle

To convert to radian

0.55*π/180

=0.0096radian

Now

d=Dtan θ

The angle is small so tan θ= θ

d=D θ

d=1.496*10^11*0.00969=0.0144*10^11m