Evaluate
-\frac{5\pi }{4}\approx -3.926990817
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\frac{-\pi \times 225}{180}
Express \frac{\pi }{180}\left(-225\right) as a single fraction.
\frac{-225\pi }{180}
Multiply -1 and 225 to get -225.
-\frac{5}{4}\pi
Divide -225\pi by 180 to get -\frac{5}{4}\pi .
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