Answer:

Step-by-step explanation:
hope this helps
first, make an equation:

then, add twelve to both sides to remove it from the right:

then just divide by (-3) to get the value of x:

In triangle b. we know that tan(x) = Opposite side to x angle / Adjacent side to angle x.
By substituting in above formula,
tan(x) = 12/5 = 2.4
x = tan^-1(2.4) = 68 degrees.
And in triangle a. i am not clear with the angle. Is it 51 or any other?
21160000
just multiply every number you see but make sure you multiply the numbers inside the parentheses first
I’m not sure if this is what your looking for but x = -49