Practice problem
If sin(x)=18\sin(x)=\frac18sin(x)=81 and xxx is in quadrant I, then find an exact value for tan(2x)\tan(2x)tan(2x)
610\frac{\sqrt6}{10}106
3731\frac{3\sqrt7}{31}3137
6231\frac{6\sqrt2}{31}3162
928\frac{9}{28}289
Type a concept, like “slope” or “photosynthesis”.