Apply a scientific function — trig, logs, roots, powers, factorial — to a value. Enter the value and pick a function.
Usage Tip
Degrees are common in geometry; radians are standard in calculus. A right angle is 90 degrees or pi/2 radians.
Trig functions respect the chosen angle mode
Angle mode (degrees or radians) matters for trig.
Factorial requires a non-negative whole number.
Logs require a positive input; even roots require a non-negative one.
A scientific calculator function applies one operation to a single value, such as a sine, a logarithm, a square root, a power, or a factorial. For trigonometric functions the result depends on the angle mode, so choose degrees or radians to match the value you entered. The same input of 30 gives a very different answer in each mode.
Some functions have limits on what you can enter. Logarithms and square roots need positive numbers, and a factorial is defined for whole numbers that are zero or greater, growing extremely fast, so 20 factorial is already over 2 quintillion. If a result looks wrong, check the angle mode first, since that is the most common cause.