Signs of functions in each quadrant. Page 4 III III IV To determine sign (pos or neg), just pick angle in quadrant and determine sign. Now do Quadrants.

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Presentation transcript:

Signs of functions in each quadrant

Page 4 III III IV To determine sign (pos or neg), just pick angle in quadrant and determine sign. Now do Quadrants III and IV.

Page 4

In what quadrant is sin positive and cos negative?

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The UNIT CIRCLE Any point on the unit circle can be found by taking the cos and sin of the given angle. Page 4

Every point on the unit circle has coordinates So, when they ask you to determine the sin of theta, it is just the second coordinate. Page 4

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REMEMBER

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