Evaluate
\pi -1.12348980185873334\approx 2.018102852
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\frac{2 \pi}{2} + -0.22252093395631434 + -0.900968867902419
Evaluate trigonometric functions in the problem
\pi -0.22252093395631434-0.900968867902419
Cancel out 2 and 2.
\pi -1.12348980185873334
Subtract 0.900968867902419 from -0.22252093395631434 to get -1.12348980185873334.
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