this first semester we also did law of sines. the formula (sinA/opposite leg = sinB/opposite leg) is used when you have a nonright triangle and have atleast one pair of an angle and oposite leg with either a different leg or another angle. to work this you just plug into the formula and cross mulitply like we use to do in like prealgebra back in the gap.
For example:
angle Z = 69
angle Y = 22
side y = 4
side z = ?
sin69/z = sin22/4
4sin69 = z sin22
4sin69/sin22 = z
z = 9.97
~~> you're suppose to draw a triangle for this too, but i'm not that talented to do it on here. for this you take angle Y and put it over side y and set it equal to angle Z over side z, then cross mulitply to solve for z. so side z equals 9.97.
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