Trigonometry (2)

By the end of this topic you can

• Define and draw the unit circle
• Use the unit circle to find trigonometric ratios in terms of co-ordinates of points for 0° ≤ θ ≤ 360°
• Find trigonometric ratios of negative angles
• Find trigonometric ratios of angles greater than 360° using the unit circle
• Use mathematical tables and calculators to find trigonometric ratios of angles in the range 0° ≤ θ ≤ 360°
• Define radian measure
• Draw graphs of trigonometric functions; y = sin x, y = cos x and y = tan x using degrees and radians
• Derive the sine rule
• Derive the cosine rule
• Apply the sine and cosine rule to solve triangles (sides, angles and area)

Full notes and worked solutions

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