Evaluate
-\frac{1}{2}=-0.5
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-\tan(45)+\cos(-60)
Use the property \tan(-x)=-\tan(x).
-1+\cos(-60)
Get the value of \tan(45) from trigonometric values table.
-1+\cos(60)
Use the property \cos(-x)=\cos(x).
-1+\frac{1}{2}
Get the value of \cos(60) from trigonometric values table.
-\frac{1}{2}
Add -1 and \frac{1}{2} to get -\frac{1}{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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