A GCSE Maths video about finding exact trigonometric values. This video explains the exact values of sinθ, cosθ and tanθ for 0°, 30°, 45°, 60° and 90° and shows how they can also be worked out using a ...
\(x\) is 50°. Corresponding angles are equal. \(y\) is 180° - 50° = 130°. Angles on a straight line add up to 180°.
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