Exam (elaborations)
A-Level Maths Formulas / Sure A+
- Course
- Institution
Area of a triangle - 1/2absinC completing the square - x^2 + bx = (x + b/2)^2 - (b/2)^2 + c Cosine rule - a² = b² + c² - 2bcCosA Equation of a Circle - r^2 = (x-a)^2+(y-b)^2 Equation of a Tangent - y - y1 = m(x - x1) Sin rule - a/sinA = b/sinB = c/sinC
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