THE UNIT CIRCLE
To examine the signs of the six trig. functions and different angle measures, click here.
The special right triangles are the 45-45-90 triangle and the 30-60-90 triangle.

Here is a 45-45-90 triangle.

 

 

Here is a 30-60-90 triangle.

 

 

 

 

To take another look at the special right triangles or to try some examples using them, click here.

 

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