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Checking and securing understanding of the unit circle

Lesson 11 / 14

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I can see how the trigonometric functions are derived from measurements within a unit circle and how this can be utilised.

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Trigonometric functions are derived from measurements within a unit circle The right-angled triangle within the unit circle has a hypotenuse of length one unit The triangle can be scaled to any other right-angled triangle Similar triangles have the same interior angles Similar triangles have the same trigonometric ratios

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