This week in math 11 we learned about the sine law. The sine law helps us fine an angle or side if a triangle.

The formula for the sine law is:

Sin a/A = Sine b/B = Sin c/C

Let’s do an easy question to start.

In this question, we’re gonna be looking for a side.

So what we do is look for opposites. so A>70 is the opposite of 50.3 and B>49 is the opposite of x

So it will be sin70/50.3 * sin49/x were going to cross multiply which ends up being:

sin49*50.3/sin70*x we take out x and we are left with

sin49*50.3/sin70 = x

then we punch in the numbers and we get 40.4.

and to find an angle you do the exact same thing but the number you get you have to put it through inverse sine to get ur answers.