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Pre-Calculus
AP Precalculus
Unit 3: Trigonometric and Polar Functions
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tan0
= sin0/cos0
sec0
= 1/cos0
csc0
= 1/sin0
cot0
= 1/tan0
sin²0+cos²0
= 1
tan²0+1
= sec²0
1+cot²0
= csc²0