Name____________________________
Name____________________________
Trigonometric Functions
The Right Triangle
Label the sides of the following right triangles-
[pic]
Sine = Cosine = Tangent =
So….. what is the famous saying to remember this???
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Let’s look at each quadrant and the signs of each trigonometric function.
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|[pic] |[pic] |[pic] |[pic] |
|Quadrant I |Quadrant II |Quadrant III |Quadrant IV |
|Sin ( is |Sin ( is |Sin ( is |Sin ( is |
|Cos ( is |Cos ( is |Cos ( is |Cos ( is |
|Tan ( is |Tan ( is |Tan ( is |Tan( is |
Examples:
In questions 1 -3 you are given the coordinates of point P, m 0 and cos ( ................
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