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Trigonometry
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\tan 70 ^ { \circ } = 2 \tan 50 ^ { \circ } + \tan 20 ^ { \circ }
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2.7474774194546216 = 2 \cdot 1.19175359259421 + 0.36397023426620234
Evaluate trigonometric functions in the problem
2.7474774194546216=2.38350718518842+0.36397023426620234
Multiply 2 and 1.19175359259421 to get 2.38350718518842.
2.7474774194546216=2.74747741945462234
Add 2.38350718518842 and 0.36397023426620234 to get 2.74747741945462234.
\text{false}
Compare 2.7474774194546216 and 2.74747741945462234.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}