The Scientific Calculator evaluates trigonometric, logarithmic, exponential, combinatorial, and power expressions with a RAD/DEG toggle and a tabbed keypad. Pretty-printed entry keeps powers and common symbols readable while history stores recent lines for review.
Calculate with scientific functions
The Scientific Calculator extends basic arithmetic with a full function set on shared mathcore evaluation. Main, abc, and func tabs group digits and operators, letter variables, and extended functions so the keypad stays usable on a phone. Undo, clear, and backspace edit the entry without leaving the display, and ans reuses the last successful result in a later line.
Angle mode sits in the toolbar as RAD or DEG. Trig and inverse trig read that mode on every evaluation, which keeps classroom degree problems and calculus radian work from colliding on the same keypad.
Use trigonometric functions in radians or degrees
Sine, cosine, and tangent accept the current angle mode. In DEG, sin(90) returns 1. In RAD, sin(pi/2) returns 1. Inverse functions asin, acos, and atan return angles in the active mode so a result can feed the next trig call without a manual conversion step.
The mode label on the toolbar is a real toggle, not a decorative badge. Switching modes does not rewrite history; it only changes how the next evaluation interprets trig arguments.
Calculate logarithms and exponents
Natural log ln, common log log, and exp sit on the func tab beside powers and roots. log(100) returns 2, and 2^10 returns 1024. Exponent entry uses ^, with a squared shortcut for a^2 style work. Roots include square root and cube root helpers that insert the matching call text into the entry row.
Percent converts a trailing value such as 50% into a proportion before evaluation, which matches common scientific keypad behavior for tax and discount checks.
Follow the correct order of operations
Precedence follows the shared parser: powers associate to the right, then unary minus, then multiply and divide, then add and subtract. Implicit multiplication such as 2pi is supported where the parser sees adjacent values. Parentheses and commas build multi-argument calls like nCr(5,2).
Pretty-print turns caret powers into superscript digits in the display so an entry like 2^10 reads closer to textbook form while the underlying text stays evaluable.
Work with powers, roots and factorials
Factorial uses a postfix ! so 5! returns 120. Combinations and permutations use nCr and nPr on the func tab. Absolute value inserts abs(, and floor or ceil round toward integer bounds when a problem needs discrete counts. Fraction-style entry with a/b evaluates as ordinary division, which covers stacked fraction templates that reduce to a single quotient.
Domain errors such as sqrt(-1) or log of a non-positive value return undefined rather than crashing the session.
Frequently asked questions
How do I switch between radians and degrees?
Press the RAD/DEG control in the toolbar. The label shows the active mode. Trig and inverse trig use that mode on the next equals.
How do I calculate a logarithm?
Open the func tab, tap ln or log, enter the argument, close the parenthesis if needed, and press equals. log(100) returns 2.
What is the order of operations?
Powers run first (right-associative), then multiply and divide, then add and subtract. Parentheses and function calls group work before surrounding operators.
How do I use the factorial?
Enter a non-negative integer and tap ! or append ! from the keypad, then press equals. 5! returns 120.
Is the scientific calculator free?
Yes. The Scientific Calculator is free on Quick Calculators and runs entirely in the browser.
Summary
The Scientific Calculator covers trig with RAD/DEG, logs, exponents, factorials, and combinations on a tabbed keypad. It sits between the Four Function Calculator and the Graphing Calculator when a problem needs functions without a full coordinate plane.