Question

encontre os possivel valor de x na equacao 2. cos x = 1÷cos x

Answer 1

$Ola'~~\mathbb{LAISNY} \\ \\ sendo~a~express\~ao: \\ \\ 2.cosx= \frac{1}{cosx} \\ \\ cos\²x= \frac{1}{2} \\ \\ cosx= \sqrt{ \frac{1}{2} } ~~---\ \textgreater \ fazemos~arcosseno~temos: \\ \\ x=arcos \sqrt{ \frac{1}{2} } \\ \\ \boxed{\boxed{ x=45\° }}$

$\mathbb{tttttttttttttttttttttttttttttttttttt}\\~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Espero~ter~ajudado!!$