A scientific calculator performs advanced mathematical operations including trigonometry, logarithms, exponents, roots, and factorials. It is an essential tool for students in mathematics, physics, chemistry, and engineering.
Sine, cosine, and tangent describe the relationship between angles and sides in right triangles. The inverse functions — arcsin, arccos, arctan — find angles from known ratios.
The natural logarithm (ln) uses base e ≈ 2.718. The common logarithm (log) uses base 10. These functions appear in compound interest, pH, signal strength, and many scientific formulas.
Expressions are evaluated in this order: Parentheses, Exponents, Multiplication and Division (left to right), then Addition and Subtraction (left to right) — commonly remembered as BODMAS or PEMDAS.