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Trigonometry

STRATEGY

Which sides you know decides the ratio. Note: These ratios only work in right triangles.

  1. 1sin = opposite / hypotenuse
  2. 2cos = adjacent / hypotenuse
  3. 3tan = opposite / adjacent
  4. 4Note: These ratios only work in right triangles.
EXAMPLE
Triangle: opposite = 3, adjacent = 4, hypotenuse = 5