(2) sin=op/hy
[tex]sin = \frac{4 \sqrt{3} }{13} [/tex]
=0. 5329 but one decimal place
So,
=0. 5
(3)
[tex]sin = \frac{7}{9} \\ = 0.7 78[/tex]
[tex]cos = \frac{x}{9} or \ \: cos = \frac{0.778}{9} \\ tan = \frac{7}{x} \: or \: tan = \frac{7}{0.778} [/tex]
I think............
I don't understand number 3 Either