Question

sendo cos ×=1/2 calcule sen e tg

Answer 1

temos que cos x = 1/2
sen² x + cos² x = 1
sen² x + 1/4 = 1
sen² x = 3/4
sen x = √3/2
tg x = sen x/cos x = (1/2)(√3/2) = 1/√3 = √3/3