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Signs in quadrants

Author:
Ronan Downes, Mike Day
This app will help you learn the SIGNS of the quadrants for the basic trig functions. Click on which trig function you want to view. Move point P so that you see the SIGN.
What is the sign for each: 1. sin x in quadrant IV? 2. cos x in quadrant III? 3. tan x in quadrant II? 4. csc x in quadrant I? 5. cot x in quadrant II? 6. Why is the sign of sin x positive in quadrants I and II?

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