Question

Sendo cos x = 3/4 e 3pi/2 < x < 2pi, calcule sen x, tg x, sec x cossec x e cotg x.

Answer 1

Olá a resposta é  cos²x + sen²x = 1 
(1/5)² + sen²x = 1 
sen x = √24 / 5 

tg x = sen x /cos x 
tg x = (√24 / 5) / (1/5) 
tg x = √24