lesson
Proving Constancy of Trig Ratios Using Similarity
Use properties of similar triangles to explain why trigonometric ratios are constant for a given angle.

Use properties of similar triangles to explain why trigonometric ratios are constant for a given angle.
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9th Grade · Math · Australian Curriculum
7 lessons
Recognise the constancy of the sine, cosine and tangent ratios for a given angle in right-angled triangles using properties of similarity.