Evaluate
11
Factor
11
Quiz
Trigonometry
5 problems similar to:
2 \cot \frac { \pi } { 4 } + 3 \tan ^ { 2 } \frac { \pi } { 3 }
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2\times 1+3\left(\tan(\frac{\pi }{3})\right)^{2}
Get the value of \cot(\frac{\pi }{4}) from trigonometric values table.
2+3\left(\tan(\frac{\pi }{3})\right)^{2}
Multiply 2 and 1 to get 2.
2+3\left(\sqrt{3}\right)^{2}
Get the value of \tan(\frac{\pi }{3}) from trigonometric values table.
2+3\times 3
The square of \sqrt{3} is 3.
2+9
Multiply 3 and 3 to get 9.
11
Add 2 and 9 to get 11.
Examples
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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
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Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}