Thats like geometry
and are you good in this suject?
Assuming that c is the length of AB (as is usually the case in the angle-side notation for triangles):
If sin(35) = 12/c, we can transform by multiplying both sides by c, and dividing both by sin(35) to get
c = 12/sin(35)
Evaluating using a calculator gives 20.92 units.
Here are some examples: 2+2=4, 5+-5=0 etc... Integers are positive numbers and negative numbers like: 5, 7, 100, -38.