You can put this solution on YOUR website! Solve for A
1 = 0.8818 - 0.0593 / A x 0.06480^2
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0.1182 = -0.0593/A x 0.004199
Cross-multiply to get:
0.0004963265..A = -0.0593
A = -119.48
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Cheers,
Stan H.