Question

Solve cos(x)(cos(x)-1)=0

Answer 1

You should try and expand the right side.

Answer 2

left* side

Answer 3

What have you tried doing?

Answer 4

\[either~\cos x=0=\cos \left( n+1 \right)\frac{ \pi }{ 2 },x=\left( n+1 \right)\frac{ \pi }{ 2 }\]
where n is an integer.
\[or~\cos x=-1=\cos \left( 2n+1 \right)\pi,x=\left( 2n+1 \right)\pi\]
where n is an integer.

Answer 5

correction \[\cos x-1=0,\cos x=1=\cos 2n \pi,x=2n \pi\]
where n is an integer.