The constancy of the sine, cosine and tangent ratios for...

Quick preparation

• recognise the constancy of the sine, cosine and tangent ratios for a given angle in right-angled triangles using properties of similarity
• understanding the terms “base”, “altitude”, “hypotenuse”, and “adjacent” and “opposite” sides to an angle, in a right-angled triangle, and…
• investigating patterns to reason about nested similar triangles that are aligned on a coordinate plane, connecting ideas of parallel sides and…