csat-suneung 2012 Q23

csat-suneung · South-Korea · csat__math-science 3 marks Standard trigonometric equations Evaluate trigonometric expression given a constraint

For $x$ satisfying the equation $3 \cos 2 x + 17 \cos x = 0$, find the value of $\tan ^ { 2 } x$. [3 points]

For $x$ satisfying the equation $3 \cos 2 x + 17 \cos x = 0$, find the value of $\tan ^ { 2 } x$. [3 points]