Textbook

Are you good enough with **trig functions** to do great on the AMC?

In order to answer “yes,” you should know all of the following, without any hints or prompting:

- the double-angle formulas for $sin$, $cos$, and $tan$
- the sum and difference formulas for $sin$, $cos$, and $tan$
- what the graphs of $sin$, $cos$, and $tan$ look like

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