Jared Vick, Dylan Hardee, Victoria Schultz

Trigonometry

Trigonometry : The branch of mathematics dealing with the relations of the sides and angles of triangles and with the relevant functions of any angles .

What Relationships are we talking?
  • Sine                                                                                                              SOH CAH TOA
  • Cosine                                             =                                                 What does it mean?
  • Tangent                                                                                       
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  • To use SOH CAH TOA the Triangle must be a Right Triangle.
  • To find the length of a side you must have the length of one other side and an angle measure other than the right angle.
  • To find the measure of an angle you must have the measures of two sides of the triangle.

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EXAMPLE: Find X and Y. Round to Nearest tenth
To find X : Which Relationship can we use to find X? Sine
Set up your equation: 
      Sine(A)=Opposite/Hypotenuse
      Sine(30)=X/10
      10Sine(30)=X  (Enter into a calculator and round) (If you are using any Trig. Functions in the calculator, make sure you are in Degree mode.)
      X=5