Mathematics - Trigonometry - Advanced - Unit circle - The Unit Circle

7 steps: (1) Unit circle: radius=1, center at origin. (2) Any point on it: (cosθ, sinθ) where θ is measured from positive x-axis counterclockwise. (3) Special angles: 0°, 30°, 45°, 60°, 90° and their coordinates. (4) 30°: (√3/2, 1/2). 45°: (√2/2, √2/2). 60°: (1/2, √3/2). (5) Extend to all quadrants:

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Mathematics - Trigonometry - Advanced - Unit circle - The Unit Circle
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Mathematics - Trigonometry - Advanced - Unit circle - The Unit Circle

vivmagarwal
vivmagarwalJan 29, 2026

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7 steps: (1) Unit circle: radius=1, center at origin. (2) Any point on it: (cosθ, sinθ) where θ is measured from positive x-axis counterclockwise. (3) Special angles: 0°, 30°, 45°, 60°, 90° and their coordinates. (4) 30°: (√3/2, 1/2). 45°: (√2/2, √2/2). 60°: (1/2, √3/2). (5) Extend to all quadrants:

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MathematicsTrigonometry - AdvancedClass 11, AS Level, Class 11, DP Grade 11, Grade 11

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