Practice problem
If , and θ\thetaθ is in quadrant II, find cos(θ)\cos(\theta)cos(θ).
357\frac{3\sqrt5}7735
−357-\frac{3\sqrt5}7−735
57\frac{\sqrt5}775
−57-\frac{\sqrt5}7−75
Type a concept, like “slope” or “photosynthesis”.