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# Trigonometric Equations

Equations with trigonometry in them can look scary, but that's nothing that a quick little substitution can't fix.

How many \(x\)'s in the interval \(0 \leq x \leq 15\pi\) satisfy \(\tan x=-\sqrt{3}\)?

Which of the following is a solution to

\[ \sin ( 2 \theta - 31 ^ \circ ) = \cos 49 ^ \circ ? \]

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