What functions does a scientific calculator have?

Scientific calculators perform trigonometric functions (sin, cos, tan), logarithms, exponentials, square roots, factorials, and statistical calculations beyond basic arithmetic.

What is the difference between sin, cos and tan?

In a right triangle: sin = opposite ÷ hypotenuse, cos = adjacent ÷ hypotenuse, tan = opposite ÷ adjacent. These are fundamental trigonometric ratios used in engineering and physics.

How do I calculate log on a scientific calculator?

Log₁₀(x) finds power of 10 that gives x. Log₁₀(100)=2 since 10²=100. Natural log (ln) uses base e≈2.718. Use the LOG or LN button on our calculator.

What is the order of operations (BODMAS)?

BODMAS: Brackets, Orders (powers/roots), Division, Multiplication, Addition, Subtraction. Always solve in this order: 2+3×4 = 2+12 = 14, not 5×4=20.

How do I calculate percentage on a scientific calculator?

Press the number, then ×, then percentage value, then the % button. Example: 200 × 15% = 30. Or manually calculate: 200 × 0.15 = 30.

Scientific Calculator Online 2026 — Free Advanced Calculator

📚 How to Use the Scientific Calculator

Trigonometric Functions

Press sin, cos, or tan, then enter the angle and press =. Switch between DEG (degrees) and RAD (radians) using the mode buttons. Press INV to access inverse functions (sin⁻¹, cos⁻¹, tan⁻¹).

Powers and Roots

x² — squares the current number
x³ — cubes the current number
xⁿ — raises to any power (enter base, press xⁿ, enter exponent, press =)
√ — square root | ∛ — cube root

Logarithms

log — log base 10 (common logarithm)
ln — natural logarithm (base e)
INV + log → 10ˣ | INV + ln → eˣ

❓ Frequently Asked Questions

Q: What is the difference between DEG and RAD mode?

A: DEG (degrees) is used in everyday calculations — a full circle = 360°. RAD (radians) is used in mathematics and physics — a full circle = 2π radians. For most school calculations, use DEG. For calculus and advanced math, use RAD. sin(90°) = 1 in DEG mode. sin(π/2) = 1 in RAD mode.

Q: How do I calculate sin, cos, tan?

A: Press sin/cos/tan button → enter the angle → press =. Example: sin(30°) → press sin → type 30 → press = → result is 0.5. Make sure you are in the correct angle mode (DEG for degrees, RAD for radians).

Q: How do I calculate factorial (n!)?

A: Enter the number first → press n! → press =. Example: 5! → type 5 → press n! → press = → result is 120. Factorial is only defined for non-negative integers.