Revise trigonometric ratios of sine, cosine and tangent and calculate angles in right-angled triangles with this Bitesize GCSE Maths Edexcel guide.

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8. N - is coefficient of angle. 9. If N=1, angle M has maximum size and maximum grind allowance. 10. If N = 2 and 3 - angle is less and grind allowance less. “The tool-designer has a choice depending ...