Quick SAT Math IIc Question about Trig Identities

<p>Do we need to know:</p>

<p>Double Angle
Half Angle
Sum and Difference Formulas
Law of Cosine/Sin</p>

<p>Cause I don’t remember any and if we do I’m going to type it into my calc lol</p>

<p>Here is what you need to know:</p>

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