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The sun's angular diameter is meas...

The sun's angular diameter is measured as 1920''. The distance 'D' of the su from the 'Earth' is ` 1.496 xx 10 ^( 11 ) ` m. what is the diameter of the sun ?

Text Solution

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We know that ` theta = d//D `
` 1'= (1//60) ^@ and 1 '' = ((1)/(60)) `
` therefore 1920'' = (1920'')/(3600) xx 0.01745 rad = 0.0093 rad`.
hence ` d = theta D = 0.0093 xx 1.496 xx 10 ^( 11 ) = 1.396 xx 10 ^( 9) `m
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