ACT Math: Geometry, Algebra, Trigonometry & Probability Key Concepts
2026. Exam Questions and Correct Answers With 100% Correct Answers |
Latest 2026 |
What is the Law of Cosines? - a² = b² + c² - 2bc * cos(A)
What is the Law of Sines? - (a/sinA) = (b/sinB) = (c/sinC)
What is the area of a triangle using trigonometry? - A = ½ ab * sin(C)
What is the slope-intercept form of a line? - y = mx + b
What is the formula for percent change? - (final percent - original percent) / original percent
* 100
What is the distance formula in the complex plane? - Distance = √((x2 - x1)² + (y2 - y1)²)
What is the formula for the midpoint of a line segment? - Midpoint = ((x1 + x2)/2, (y1 +
y2)/2)
What is the formula for the area of a trapezoid? - Area = (1/2)(a + b)h
What is the formula for the volume of a cylinder? - Volume = πr²H
What is the quadratic formula? - x = (-b ± √(b² - 4ac)) / (2a)
What is the formula for the circumference of a circle? - Circumference = πd
2026. Exam Questions and Correct Answers With 100% Correct Answers |
Latest 2026 |
What is the Law of Cosines? - a² = b² + c² - 2bc * cos(A)
What is the Law of Sines? - (a/sinA) = (b/sinB) = (c/sinC)
What is the area of a triangle using trigonometry? - A = ½ ab * sin(C)
What is the slope-intercept form of a line? - y = mx + b
What is the formula for percent change? - (final percent - original percent) / original percent
* 100
What is the distance formula in the complex plane? - Distance = √((x2 - x1)² + (y2 - y1)²)
What is the formula for the midpoint of a line segment? - Midpoint = ((x1 + x2)/2, (y1 +
y2)/2)
What is the formula for the area of a trapezoid? - Area = (1/2)(a + b)h
What is the formula for the volume of a cylinder? - Volume = πr²H
What is the quadratic formula? - x = (-b ± √(b² - 4ac)) / (2a)
What is the formula for the circumference of a circle? - Circumference = πd
