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“If you were asked to find the sec(30), on your TI-84 Plus, what would you actually need to do? Yes, to find sec(30), you’d have to take 1/cos(30). Similarly, you’d have to use the other reciprocal relationships that csc(x)=1/sin(x) and cot(x)=1/tan(x).”
― TI-84 Plus Tutorials: The TI-84 Plus for Beginners: Get Started with the TI-84 Plus Graphing Calculator
― TI-84 Plus Tutorials: The TI-84 Plus for Beginners: Get Started with the TI-84 Plus Graphing Calculator
