Practice problem
Solve for all solutions. cos(8θ)−cos(2θ)=sin(5θ)\\\cos(8\theta)-\cos(2\theta)=\sin(5\theta)cos(8θ)−cos(2θ)=sin(5θ)
5π18+2π3k\frac{5\pi}{18}+\frac{2\pi}3k185π+32πk
π5k\frac{\pi}5 k5πk
7π18+2π3k\frac{7\pi}{18}+\frac{2\pi}3k187π+32πk
11π18+2π3k\frac{11\pi}{18}+\frac{2\pi}3k1811π+32πk
Type a concept, like “slope” or “photosynthesis”.