Integrate

gradient x f, f = (3y, -xz, -yz2)

over the portion of the surface 2z = x2 +
y2below the plane z = 2, both directly and by using
stokes'theorem.

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.