Introduction to Trigonometry
What do you notice about the ratio for 30º ?
Calculate sin(30) using a calculator:
Use this applet for the next task.
What do you notice about the ratio for you new angle?
Calculate sin(___) for your new angle using a calculator:
Explore this applet:
Change the length of the fishing rod. What do you notice about the cos ratio ?
cos is called the COSINE ratio. Calculate cos(___) for your angle using a calculator:
Which ratio is COSINE (cos) ?
Change the length of the fishing rod. What do you notice about the tan ratio ?
tan is called the TANGENT ratio. Calculate tan(___) for your angle using a calculator:
Which ratio is TANGENT (tan) ?
Summary:
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