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).

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Scientific Calculator

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Calculator

Input Values

Calculation Type

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Value / Base

Second Value / Exponent

Decimal Places

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