sin 0 = opposite side / hypotenuse
From the triangle:
opposite side = 3
adjacent side = 7
hypotenuse = ?
1.- Calculate the hypotenuse
h^2 = 7^2 + 3^2
h^2 = 49 + 9
h^2 = 58
h = squared root (58)
2.- Calculate the sin 0
sin = 3/squared root (58) =3squared root (58) / 58
[tex]\text{ sin }\emptyset\text{ = }\frac{3\sqrt[]{58}}{58}[/tex]
