Transcription of Definitions and Formulas for Multi-Subject: …
1 Definitions and Formulas for multi - subject : secondary Teachers( grade 7 grade 12) Part Two: Mathematics ALGEBRA Quadratic Formula: x = aacbb24 2 TRIGONOMETRY sin A = hypotenuseopposite cos A = hypotenuseadjacent tan A = adjacentopposite Law of Sines: Aa sin = Bb sin = Cc sin Law of Cosines: a2 = b2 + c2 2bc cos A Area of a Triangle: K = ab21sin C GEOMETRY Area of a Triangle: A = ab21 Area of a Trapezoid: A = 21h(b1 + b2) Lateral Area of a Right Circular Cylinder: L = 2 rh Lateral Area of a Right Circular Cone: L = rl where l is the slant height Surface Area of a Rectangular Prism: SA = 2lw + 2hw + 2lh Surface Area of a Cylinder: SA = 2 r2 + 2 rh Surface Area of a Sphere: SA = 4 r2 Volume of a Cylinder: V = r2h Volume of a Pyramid: V = 31Bh where B is the area of the base Definitions and Formulas (continued) Volume of a Right Circular Cone: V = 31 r2h Volume of a Sphere: V = 34 r3 COORDINATE GEOMETRY Slope of a Line: m = xy = 1212 xxyy Sum of a Finite Arithmetic Series: Sn = 2) (1naan+ Sum of a Finite Geometric Series: Sn = rran 1) 1(1
