Practice problem
Solve for all solutions. cos(5x)=−cos(2x)\\\cos(5x)=-\cos(2x)cos(5x)=−cos(2x)
π5+2π5k\frac{\pi}5+\frac{2\pi}5k5π+52πk
π6+π3k\frac{\pi}6+\frac{\pi}3k6π+3πk
π7+2π7k\frac{\pi}7+\frac{2\pi}7k7π+72πk
π3+2π3k\frac{\pi}3+\frac{2\pi}3k3π+32πk
Type a concept, like “slope” or “photosynthesis”.