Question

2senx. cosx - cosx = 0

Answer 1

$Ola' \\ \\ Supondo~que~temos~que~calcular~o~valor~de~(x)~ent\~ao~fazemos~o \\ siguente. \\ \\ 2senx.cosx-cosx=0 \\ \\ 2senx.cosx=cosx \\ \\ 2senx= \frac{cosx}{cosx} \\ \\ 2senx=1 \\ \\ senx= \frac{1}{2}$

$x=arcsen ( \frac{1}{2}) \\ \\ \boxed{ \boxed{x= 30\°}} \\ \\ \mathbb{tttttttttttttttttttttttttttttttttttt}\\ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Espero~ter~ajudado!!$