Question

Se x E ( 0, 2π), qual o valor de x para: 2.cosx=1?

Answer 1

$\mathsf{2cos(x)=1}\\\mathsf{cos(x)=\dfrac{1}{2}}\\\large\boxed{\boxed{\boxed{\boxed{\mathsf{x=\dfrac{\pi}{3}~ou~x=\dfrac{5\pi}{3}}}}}}$