Solve for a
a=7.0139383486252384
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0.4383711467890774 = \frac{a}{16}
Evaluate trigonometric functions in the problem
0.4383711467890774\times 16=a
Multiply both sides by 16.
7.0139383486252384=a
Multiply 0.4383711467890774 and 16 to get 7.0139383486252384.
a=7.0139383486252384
Swap sides so that all variable terms are on the left hand side.
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