finish chapter 10.1 ws (tangent)
notes:
tan (angle) = opp / adj
if x is in the numerator... multiply the "tan side" by the denominator.
if x is in the denominator... divide the numerator by the "tan side."
notes:
tan (angle) = opp / adj
if x is in the numerator... multiply the "tan side" by the denominator.
if x is in the denominator... divide the numerator by the "tan side."
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