Question

Sabendo que senx = 13/12, então o valor de cosx e igual a:
a)5/13
b)5/12
c)12/13
d)12/5
e)13/5

Answer 1

/l

¹³ /. l ¹² => 13²=12²+(5)²

/ 5 l

Cos x = ca/hip = 5/13