Question

find the distance from the eye at which a coin of 2 cm diameter should be held so as to conceal the full moon is angular diameter is 31'. With all steps clearly.

Answer 1

Answer:

given diameter=2cm

31'=31/60=(31/60)°

31/60×π/180

theta=arc/rad

31×π/60×180=2/r

60×180×2/31×π

10800×2/31×22/7

10800×7×2/31×22

75600/31×11

221.7cm

or,2.217m