Practice problem
If cos(x)=23\cos(x)=\frac23cos(x)=32 and xxx is in quadrant I, then find an exact value for tan(2x)\tan(2x)tan(2x)
−8-8−8
−45-4\sqrt5−45
−46-4\sqrt6−46
−47-4\sqrt7−47
Type a concept, like “slope” or “photosynthesis”.