Solve for x
x=5.7340643100229426
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0.8191520442889918 = \frac{x}{7}
Evaluate trigonometric functions in the problem
0.8191520442889918\times 7=x
Multiply both sides by 7.
5.7340643100229426=x
Multiply 0.8191520442889918 and 7 to get 5.7340643100229426.
x=5.7340643100229426
Swap sides so that all variable terms are on the left hand side.
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