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CBSE Class 11-science Answered

The Earth-Moon distance is about 60 times the radius of the earth. What will be the approximate angular diameter of the earth as seen from the moon?     
Asked by nellore.jayasai | 16 Jan, 2019, 07:58: AM
Expert Answer
Aangular diameter = tanΘ = 2×fraction numerator r a d i u s space o f space e a r t h over denominator d i a tan c e space b e t w e e space m o o n space a n d space e a r t h end fraction space equals space fraction numerator x over denominator 60 x end fraction space equals space 1 over 60×2
 So Θ = arctan(1/30)
 
Diagram is attached for clarifications 
Answered by Ankit K | 17 Jan, 2019, 03:33: PM
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