After studying this section, you will be able to:

  • use the sine, cosine and tangent ratios to find angles and sides in right-angled triangles
  • find the area of a triangle using the formula
  • find the sine, cosine and tangent of any angle
  • use the sine and cosine rules

The video below shows you how to find lengths or angles within a triangle using trigonometry and find out Sine, Cosine and Tangent rules.

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