Question

If the length of side a is 12 centimeters, m 10 years ago

Answer 1

so you are dealing with a non right triangle

looks like the law of sines to me

you can find angle A by angle sum of a triangle

A = 180 - 75 - 36

then its

\[\frac{a}{\sin(A)} = \frac{b}{\sin(B)}\]

hope it helps