Evaluate
\frac{\sqrt{2}}{2}\approx 0.707106781
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\cos(45)
Use the property \cos(-x)=\cos(x).
\frac{\sqrt{2}}{2}
Get the value of \cos(45) from trigonometric values table.
Examples
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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