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Introducing Trigonometry

Introducing Trigonometry. Opposite. Hypotenuse. 30 º. Adjacent. We use 3 functions. Sine or SIN Cosine or COS Tangent or TAN. Investigation. To find a relationship between the 3 functions and the ratios of the lengths of a right angled triangle. Opposite. Adjacent.

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Introducing Trigonometry

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  1. Introducing Trigonometry

  2. Opposite Hypotenuse 30º Adjacent

  3. We use 3 functions • Sine or SIN • Cosine or COS • Tangent or TAN

  4. Investigation • To find a relationship between the 3 functions and the ratios of the lengths of a right angled triangle.

  5. Opposite Adjacent Hypotenuse 53.2º

  6. Sin X = O / H • Cos X= A / H • Tan X = O / A

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