- Result
- 20
How it works
The angle setting changes function inputs
sin(30) equals 0.5 in degree mode but approximately −0.988 in radian mode. Both calculations are valid for different angles. Match the selected unit to your source problem before interpreting a surprising trigonometric result.
Checking expression structure before evaluating
Use parentheses to make the intended order of operations explicit, particularly around fractions, powers, and negative values. Check the supported function names and angle convention before entering a trigonometric expression. A mathematically valid expression can still answer the wrong question if the grouping is different. Compare the entered expression with the original problem before relying on the numerical result.
Calculate an expression: formula and assumptions
Evaluate parentheses and functions, then powers, multiplication/division, and addition/subtraction.
Use explicit multiplication, for example 2 * (3 + 4). ln is the natural logarithm and log is base 10. Angle units apply to trigonometric functions.
Worked example
Using the Calculate an expression example:
- Angle unit
- Degrees
- Expression
- sqrt(144) + 2^3
Evaluate parentheses and functions, then powers, multiplication/division, and addition/subtraction.
Example result
Result: 20
These are illustrative inputs. Change the values to explore a different scenario.
Formula references
References explain the underlying methods; they do not imply endorsement or individual professional review of Finflo.
Common questions
What is the difference between log and ln?
In this expression calculator, log means base 10 and ln means the natural logarithm with base e.
How should I write multiplication next to parentheses?
Use an explicit multiplication sign, such as 2 * (3 + 4). Select the angle unit before evaluating trigonometric functions.
Prepared by Finflo. See our methodology and editorial policy.