A curve is defined by the parametric equations
x=2cosθ and y=2sinθwhere 0≤θ≤2π x = 2\cos\theta \text{ and } y = 2\sin\theta \quad \text{where } 0 \le \theta \le 2\pi x=2cosθ and y=2sinθwhere 0≤θ≤2πWhich of the options shown below is a Cartesian equation for this curve?
yx=tanθ\frac{y}{x} = \tan \thetaxy=tanθ
x2+y2=4x^2 + y^2 = 4x2+y2=4
x2−y2=4x^2 - y^2 = 4x2−y2=4
x2+y2=2x^2 + y^2 = 2x2+y2=2
178 exam-style questions on OCR (MEI) A Level Maths 1.5 Coordinate Geometry, covering 1.5.1 Equation of a straight line y = mx + c, 1.5.2 Gradients of parallel and perpendicular lines, 1.5.3 Distance between two points, 1.5.4 Midpoint of a line segment, 1.5.5 Form the equation of a straight line, 1.5.6 Draw a line given its equation, 1.5.7 Point of intersection of two lines, 1.5.8 Straight line models, 1.5.9 Intersection of a line and a curve, 1.5.10 Intersection of a line and a circle, 1.5.11 Equation of a circle, 1.5.12 Circle properties, 1.5.13 Parameter and parametric equations (A-level only), 1.5.14 Convert between cartesian and parametric forms (A-level only), 1.5.15 Equation of a circle in parametric form (A-level only), 1.5.16 Gradient of a parametric curve (A-level only), 1.5.17 Parametric equations in modelling (A-level only), and 1.5 Coordinate Geometry. Each one has a worked solution and a mark scheme showing where the marks go.