Paper 2 · Trigonometry
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Lesson 3 of 9
Trigonometry 2.3: Radians and the unit circle
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- Solve trig equations over 0 ≤ A ≤ 2π working directly in radians
- Use the radian quadrant formulas: π − ref, π + ref, 2π − ref
- Add and subtract fractions of π with a common denominator (π + π/6 = 7π/6)
- Read the domain to pick the unit: 2π means radians, 360° means degrees
Most recent exam questions
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