Soh Cah Toa

Geometry Level 3

Find the length of the vertical dotted line $x$ .

\frac {4 \sqrt {3} + 3}{10}

\frac{4 \sqrt {2} + 3}{5}

\frac{4 \sqrt {3} + 3}{9}

\frac{6 \sqrt {3} + 3}{10}

\frac{4 \sqrt {2} + 1}{10}