What is the approximate value of sin b?
a.2.29
b.0.92
c.0.40
d.1.09

  or (1,1)

Step-by-step explanation:

You can apply the Method of substitution.

Knowing that   (second equation), you can substitute it into the first equation and solve for the variable y:

Now you need to substitute into the second equation to calculate the value of the variable x. Then:

Then, the solution is:

or (1,1)