Practice problem
Rewrite the sum as a product. sin(h)+sin(3h)\\\sin(h)+\sin(3h)sin(h)+sin(3h)
2sin(2h)cos(h)2\sin(2h)\cos(h)2sin(2h)cos(h)
−2sin(h)cos(2h)-2\sin(h)\cos(2h)−2sin(h)cos(2h)
2cos(2h)cos(h)2\cos(2h)\cos(h)2cos(2h)cos(h)
−2sin(2h)sin(h)-2\sin(2h)\sin(h)−2sin(2h)sin(h)
Type a concept, like “slope” or “photosynthesis”.