(13.1^2-b^2 15.2^2 30^2)/(2*1​3.1*15.2)=​1.461

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THARUN KONDURU
THARUN KONDURU 2019-12-3
回答： Shota Kato 2019-12-3
calculate b value

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Shota Kato
Shota Kato 2019-12-3
syms b
fun = (13.1^2 - b^2 * 15.2^2 * 30^2 ) / (2*13.1*15.2)==1.461;
ans = solve(fun)
ans =
-(25638665^(1/2)*1i)/114000
(25638665^(1/2)*1i)/114000
25638665^(1/2) / 114000
ans =
0.0444

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