Solve for x
x = \frac{8390996311772799}{7700000000000000} = 1\frac{690996311772799}{7700000000000000} \approx 1.089739781
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0.8390996311772799 = 0.77 \cdot x
Evaluate trigonometric functions in the problem
\frac{0.8390996311772799}{0.77}=x
Divide both sides by 0.77.
\frac{8390996311772799}{7700000000000000}=x
Expand \frac{0.8390996311772799}{0.77} by multiplying both numerator and the denominator by 10000000000000000.
x=\frac{8390996311772799}{7700000000000000}
Swap sides so that all variable terms are on the left hand side.
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