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Shows how to use Soh-Cah-Toa to determine which trig ratio to use.

Basic Trigonometry - how to find missing sides and angles easily. Using sin, cos and tan to find missing sides and angles Essential Maths GCSE revision I created this video using a compilation of my own previously uploaded examples with the YouTube Video Editor (http://www.youtube.com/editor) View my channel: http://www.youtube.com/jayates79

When do I use Sine, Cosine or Tangent?

Follow these simple steps:

Draw a table and label as shown in the tutorial

Fill in the Sine row first by writing number 0-4

Divide each number by four (4) and find the square root of answer

The answer you get is the trig ratio for the sine of angles

Fill the Cosine row by writing out the values of the sine in reverse order

Tangent of angles is sine of the angle divided by the cosine of the angle.

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