Practice problem
Solve for all solutions. cos(5x)cos(3x)−sin(5x)sin(3x)=32\\\cos(5x)\cos(3x)-\sin(5x)\sin(3x)=\frac{\sqrt3}2cos(5x)cos(3x)−sin(5x)sin(3x)=23
x=π48+π4kx=\frac{\pi}{48}+\frac{\pi}4kx=48π+4πk
x=−π48+π4kx=-\frac{\pi}{48}+\frac{\pi}4kx=−48π+4πk
x=π16+π4kx=\frac{\pi}{16}+\frac{\pi}4kx=16π+4πk
x=−π16+π4kx=-\frac{\pi}{16}+\frac{\pi}4kx=−16π+4πk
Type a concept, like “slope” or “photosynthesis”.
