Paper 2 · Trigonometry
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Lesson 2 of 8
Trigonometry 1.2 – Sin, Cos and Tan
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- Use SOHCAHTOA to pick the right ratio: sin = opp/hyp, cos = adj/hyp, tan = opp/adj
- Label opposite and adjacent relative to the angle you're working with
- Find a missing side from an angle and a side, multiplying first when x is underneath
- Find an angle from two sides using sin⁻¹, cos⁻¹ or tan⁻¹ on the calculator
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