Trigonometry
Find all solutions to the equation.
cosx=1\cos x=1cosx=1
x=0x=0x=0
x=2πnx=2\pi nx=2πn
x=π+2πnx=\pi+2\pi nx=π+2πn
x=π2+2πn,x=3π2+2πnx=\frac{\pi}{2}+2\pi n,x=\frac{3\pi}{2}+2\pi nx=2π+2πn,x=23π+2πn