Question

resolva as equaçoes em r: cossec×=2

Answer 1

2*sen x - cossec x = 1

R: S = { x E R/ x = pi/2 + 2*k*pi ou x = 7*pi/6 + 2*k*pi + 2*k*pi ou x = 11*pi/6 + 2*k*pi , k E Z }