Algebra, Geometry & Trigonometry

Algebra, geometry and trigonometry calculators and formulas for the quadratic formula, Pythagorean theorem, distance, slope, law of sines and cosines, arc length and logarithms.

9Formulas

All levels Difficulty

Updated Sep 2026

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Fundamental

Logarithm Change of Base Formula

log_b(x) = ln(x) / ln(b)

Fundamental

Law of Sines

a/sin(A) = b/sin(B) = c/sin(C)

Fundamental

Law of Cosines

c^2 = a^2 + b^2 - 2ab*cos(C)

Fundamental

Slope-Intercept Form of a Line

y = m*x + b

Fundamental

Slope Formula

m = (y2-y1) / (x2-x1)

Fundamental

Distance Formula (Two Points)

d = sqrt((x2-x1)^2 + (y2-y1)^2)

Fundamental

Pythagorean Theorem

c = sqrt(a^2 + b^2)

Fundamental

Quadratic Formula

x = (-b ± sqrt(b^2 - 4ac)) / (2a)

Fundamental

Arc Length of a Circular Arc

L = r * theta