First, find \(m\), the gradient of the tangent. On a diagram, draw the circle and the tangent at the point P (3, -4) and draw the radius from the centre (0, 0) to the point P. The gradient of the ...
The circumference of a circle is the distance ... being rounded off as appropriate. Calculate the circumference of the dartboard. The diameter is twice the radius. \(d = 20 \times 2 = 40~\text ...
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