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Full scientific calculator with functions.
A scientific calculator evaluates full arithmetic expressions along with trigonometry, logarithms, exponents, roots, factorials and the constants pi and e. Instead of working one step at a time, you type an entire expression and it is evaluated using the correct order of operations.
It is the everyday tool for algebra, geometry, physics and engineering problems where you need functions and grouping that a basic four-function calculator cannot handle.
They are two units for measuring angles. A full circle is 360 degrees or 2π radians. Set the mode to match how your problem states the angle, otherwise trig results will be wrong.
log is the base-10 logarithm and ln is the natural logarithm (base e). So log(1000) = 3 and ln(e) = 1.
The % key computes the remainder (modulo). For a percentage of a number just multiply, e.g. 0.2 * 150 for 20% of 150.
Errors come from undefined math such as dividing by zero, the square root of a negative number, or an unbalanced bracket. Check the expression and try again.