turkey-yks 2014 Q25

turkey-yks · Other · lys1-math Quadratic trigonometric equations
For $0 \leq x \leq 2 \pi$, $\cos \mathrm { x } + \sin 2 \mathrm { x } = \cot \mathrm { x }$ What is the sum of the $\mathbf { x }$ values that satisfy this equation?
A) $2 \pi$
B) $3 \pi$
C) $4 \pi$
D) $\frac { 5 \pi } { 2 }$
E) $\frac { 7 \pi } { 2 }$
For $0 \leq x \leq 2 \pi$,\\
$\cos \mathrm { x } + \sin 2 \mathrm { x } = \cot \mathrm { x }$\\
What is the sum of the $\mathbf { x }$ values that satisfy this equation?\\
A) $2 \pi$\\
B) $3 \pi$\\
C) $4 \pi$\\
D) $\frac { 5 \pi } { 2 }$\\
E) $\frac { 7 \pi } { 2 }$