Maths General Rules, Formulas & Equations 5.0 / 5 based on 1 ratingTeacher recommended ? Mathematics2D and 3D shapeVolume and surface areaPythagorasTrigonometryShape transformationsAlgebraAnglesGCSEAll boards Created by: JayceMCreated on: 28-06-17 19:43 Area of a Rectangle width x height 1 of 30 Area of a Triangle base x height / 2 2 of 30 Area of a Parallelogram vertical height x width 3 of 30 Area of a Trapezium (a+b) x h / 2 4 of 30 Front and Back area base x height x 2 5 of 30 Left and Right area length x height x 2 6 of 30 Top and Bottom area length x base x 2 7 of 30 Volume of a Prism front area x length 8 of 30 General equation for a straight line y = mx + c 9 of 30 Gradient m m = y length / x length 10 of 30 Gradient m (alternative method) m = y1 - y2 / x1 - x2 11 of 30 4 types of Transformation Translation Reflection Rotation Enlargement 12 of 30 Pythagoras theorem - To find H h = √(a² + b²) 13 of 30 Pythagoras theorem - To find A a = √(h² - b²) 14 of 30 Trigonometry - Hypotenuse / h Opposite the right angle 15 of 30 Trigonometry - Adjacent / A Next to both angles 16 of 30 Trigonometry - Opposite / O Opposite Theta 17 of 30 Trigonometry - Theta / ⊖ Denotes an angle 18 of 30 Trig functions - Sine Sin -> opp hyp 19 of 30 Trig functions - Cosine Cos -> adj hyp 20 of 30 Trig functions - Tangeant Tan -> opp adj 21 of 30 What does SOH stand for? Sin⊖ = O / H 22 of 30 What does CAH stand for? Cos⊖ = A / H 23 of 30 What does TOA stand for? Tan⊖ = O / H 24 of 30 Trig Re arranging - If x is on Top of the fraction Cos 54 = x / 15 --> 15 x cos 54 = x 25 of 30 Trig Re arranging - If x is on the Bottom of the fraction Sin 42 = 12 / x --> x = 12 / Sin 42 26 of 30 Trigonometry Note Always use the 2 sides with labels on. The x and the one with another number on. 27 of 30 Trigonometry Opposite reciprocants Sin -> Sin⎺1 28 of 30 Trigonometry Opposite reciprocants Cos -> Cos⎺1 29 of 30 Trigonometry Opposite reciprocants Tan -> Tan⎺1 30 of 30
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