The Law of Sines (or Sine Rule) is very useful for solving triangles:
It works for any triangle:
a, b and c are sides.
A, B and C are angles.
(Side a faces angle A,
And it says that:
When we divide side a by the sine of angle A
it is equal to side b divided by the sine of angle B,
and also equal to side c divided by the sine of angle C
Sure … ?
Well, let’s do the calculations for a triangle I prepared earlier: