Grouped Data, Ogives and Box-and-Whisker Plots
Estimate a mean from grouped data, build and read an ogive, and draw a box-and-whisker plot that shows skewness and outliers.
Read a circle's centre and radius from its equation, complete the square when it is not in standard form, and find the tangent at any point.
By the end, you can
find the centre and radius of a circle and determine the equation of a tangent at a given point.
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Coordinate Circles and Tangents
One equation, everything in it
A circle's equation carries its centre and its radius, and once you can read those two things off, every other question in this topic follows. ⭕
The one fact that makes tangents easy: a tangent is perpendicular to the radius at the point of contact. Almost every tangent question is that sentence turned into algebra.
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Next on the Mathematics P2 path · step 3 of 9
Euclidean Geometry: Circle Theorems and Reasons
14 min · R19
Estimate a mean from grouped data, build and read an ogive, and draw a box-and-whisker plot that shows skewness and outliers.
Describe a scatter plot properly, interpret the correlation coefficient, use the least squares line to predict, and know when a prediction is worthless.
Prove triangles similar, use the proportion theorem correctly, and set up ratios that give the right answer every time.
Choose between the sine rule, cosine rule and area rule with confidence, and handle 2D and 3D problems without losing your way.
Solve trig equations with the general solution, and read amplitude, period and shifts off a sine, cosine or tangent graph.
The whole Mathematics P2 path → All High School MicroQuests → Browse all 134 →
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Coordinate Circles and Tangents
R19 · 13 min · certificate