Practice problem
Give exact values for (cosθ,sinθ)(\cos\theta,\sin\theta)(cosθ,sinθ) for .
(12 ,−32 )(\frac12\ ,-\frac{\sqrt3}2\ )(21 ,−23 )
(12 ,32 )(\frac12\ ,\frac{\sqrt3}2\ )(21 ,23 )
(−12 ,−32 )(-\frac12\ ,-\frac{\sqrt3}2\ )(−21 ,−23 )
(−12 ,32 )(-\frac12\ ,\frac{\sqrt3}2\ )(−21 ,23 )
Type a concept, like “slope” or “photosynthesis”.