How do I use sin, cos, tan on a scientific calculator?

Enter the angle value, select degrees or radians mode, then choose sin, cos, or tan. For example, sin(30°) = 0.5, cos(60°) = 0.5, tan(45°) = 1.

What's the difference between log and ln?

log is the logarithm base 10 (common logarithm), while ln is the natural logarithm base e (≈2.71828). log(100) = 2 because 10² = 100. ln(e) = 1.

How do I calculate square roots and other roots?

Use sqrt(x) for square root, cbrt(x) for cube root, or x^(1/n) for nth root. For example, sqrt(16) = 4, cbrt(27) = 3, 16^(1/4) = 2.

How do I calculate exponents and powers?

Use x^y or the exponent button. For example, 2^3 = 8, 10^2 = 100. For e^x, simply use exp(x) or e^x.

What is scientific notation and how do I use it?

Scientific notation expresses numbers as a × 10^n. Enter 3e5 for 3×10⁵ = 300,000. Results in scientific notation show as 3E+5.

How do I calculate factorials?

Use n! notation. Factorial multiplies all positive integers up to n. For example, 5! = 5×4×3×2×1 = 120. Only works for non-negative integers.

What are inverse trigonometric functions?

Inverse trig functions (asin, acos, atan) find the angle from a ratio. asin(0.5) = 30° because sin(30°) = 0.5. Also called arcsin, arccos, arctan.

How do I switch between degrees and radians?

Use the angle mode selector. π radians = 180°. To convert: degrees = radians × (180/π), radians = degrees × (π/180).

Scientific Calculator

Our free online scientific calculator provides all the functions you need for advanced mathematics, engineering, and science calculations. Features include trigonometric functions (sin, cos, tan), logarithms, exponents, roots, factorials, and scientific notation with detailed step-by-step explanations.

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calendar_today Updated: April 2025

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Calculator

Input Values

Calculation Type

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Value / Base

Second Value / Exponent

Decimal Places

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Calculation: sin(30°) + log(100) = 2.5

Step 1: sin(30°) = 0.5
Step 2: log(100) = log₁₀(100) = 2
Step 3: 0.5 + 2 = 2.5

Tip: sin(30°) = 1/2 is a special angle. log(100) = 2 because 10² = 100.

Keyboard Shortcuts

Basic Operations

Numbers0-9

Add+

Subtract-

Multiply*

Divide/

EqualsEnter

ClearEsc

Delete⌫

Scientific Functions

SineS

CosineShift+S

TangentT

Natural LogL

Log₁₀Shift+L

Square RootR

Power^

Factorial!

Interface Controls

HistoryH

ScientificF

DEG/RADD

NegateN

Pi (π)P

Euler's eE

Tips

• Press F to toggle scientific functions
• Use D to switch DEG/RAD mode
• Press H to view history
• Use parentheses ( ) for complex expressions

How to Use This Calculator

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Select Type

Choose basic, trigonometry, logarithm, power, or factorial operations.

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Enter Values

Input the number(s) for your calculation.

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Choose Operation

Select the specific function (sin, log, sqrt, etc.).

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View Result

See the result with step-by-step explanation.

The Formula

Scientific calculators perform advanced mathematical operations including trigonometry, logarithms, exponents, and more.

Various mathematical functions and operations

lightbulb Variables Explained

sin, cos, tan Trigonometric functions
log, ln Logarithmic functions (base 10 and natural)
x^y, e^x Exponential operations
sqrt, cbrt Square root and cube root

tips_and_updates Pro Tips

Switch between degrees and radians for trigonometric functions

Use log for base-10 logarithm and ln for natural logarithm

Factorial (n!) is only valid for non-negative integers

Use parentheses to control order of operations

e ≈ 2.71828 and π ≈ 3.14159

For inverse trig functions, use asin, acos, atan

Scientific Calculator - Advanced Math Online Free

Perform complex mathematical calculations with our free online scientific calculator. Features trigonometry, logarithms, exponents, roots, factorials, and more with detailed step-by-step solutions.

Trigonometry Calculator

Calculate sine, cosine, tangent, and their inverse functions. Supports both degrees and radians mode. Perfect for geometry, physics, and engineering calculations.

Logarithm Calculator

Compute common logarithms (log₁₀), natural logarithms (ln), and logarithms with custom bases. Step-by-step solutions help you understand the calculations.

Exponent and Power Calculator

Calculate powers, exponentials, and roots including square root, cube root, and nth root. Handle scientific notation with ease.

Factorial and Combinatorics

Calculate factorials (n!), permutations (nPr), and combinations (nCr). Essential for probability, statistics, and combinatorics problems.

Scientific Notation Calculator

Convert between standard and scientific notation. Handle very large or very small numbers with precision.

Engineering Calculator

A complete scientific calculator for engineering students and professionals. All the functions you need for technical calculations.

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