During a total solar ecilpse the moon almost entirely covers the sphere of the sun. Write the relation between the distances and sizes of the sun and moon.

Explanation

From the figure, we find that
Radius of the sun `=R_(s)`
Diameter of the sun `2 R_(s)= D_(s)`
Distance of the sun from earth `R_(se)`
Radius of the moon `=R_(m)`
Diameter of the moon `=2R_(m)= D_(m)`
Distance of the moon from earth `=R_(me)`
Using property of similar triangles we can write the following :
`(D_s)/(D_m)=(R_s)/(R_me)`
or `(R_s)/(R_m)=(R_se)/(R_me)`.