Since L is much bigger than r, we have
Since the angle is very low, we have
I have an issue with this question that why in the solution 2 is multiplied to the radius of 6400.
The question is....
Q)the angle subtended by the earth at the eye of the spaceman landed on the moon is 1 degree 54 minute.The radius of earth is 6400 km.Find the approx distance b/w the moon and the earth.
r=386065.45 km Ans
Did you make a sketch?
Q) The angle subtended by the earth at the eye of the spaceman
on the moon is 1 degree 54 minutes. The radius of earth is 6400 km.
Find the approx distance b/w the moon and the earth.Code:* * * | - * * * |R * * * | * o @ * * * * * | * * * |R * * * | * *
Do you see why we use 2R ?
BTW, their answer is off.
1 degree, 54 minutes .= .1.9 degrees.
. . And 1.9 degrees = 0.033161256 radians.