SOLUTION: 14. What is the sign of sin, cos and tan in the second and fourth quadrants?
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Question 771399: 14. What is the sign of sin, cos and tan in the second and fourth quadrants?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
14. What is the sign of sin, cos and tan in the second and fourth quadrants?
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sin is + + - -
cos is + - - +
tan is + - + -
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Don't memorize them, use the unit circle.
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