Evaluate
-\frac{15\sqrt{2}}{2}\approx -10.606601718
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15\left(-1\right)\sin(45)
Use the property \sin(-x)=-\sin(x).
15\left(-\frac{\sqrt{2}}{2}\right)
Get the value of \sin(45) from trigonometric values table.
\frac{-15\sqrt{2}}{2}
Express 15\left(-\frac{\sqrt{2}}{2}\right) as a single fraction.
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