Question

if the angular diameter of the Moon be 30 minute how far from the eyes should a coin of diameter 2.2 CM be kept to hide the moon ​

Answer 1

Angle = length of arc / radius

30' = 30/60 = 1/2 °

1/2° =( π/180×2)radian

=( π/360) radian.

π= 22/7

π/360 = 2.2/radius

r = 2.2×360/π

r = 2.2×360×7/22

r = 252 cm

hope it may help you

Answer 2

Answer:

Step-by-step explanation:

Angle = length of arc / radius

30' = 30/60 = 1/2 °

1/2° =( π/180×2)radian

=( π/360) radian.

π= 22/7

π/360 = 2.2/radius

r = 2.2×360/π

r = 2.2×360×7/22

r = 252 cm