Powers and roots
An exponent such as 3^4 means multiplying 3 by itself four times, giving 81. The square root of a positive number is the nonnegative value whose square equals that number.
Scientific Math Calculator — Examples
Examples, context and typical uses for Scientific Math Calculator.
Trigonometry
Scientific functions use angle conventions. The quick examples supplied here use radians; 30 degrees is π/6 radians and its sine is approximately 0.5.
Precision
Floating-point results are approximations; for exact symbolic manipulation, a computer algebra system is required.