<u>ANSWER</u>

<u>EXPLANATION</u>
We want to solve the trigonometric equation;
, where
.
Taking square root of both sides gives,


Since B is in the first quadrant, we proceed with;
, because the tangent ratio is positive in the first quadrant.

.
Correct to the nearest degree,

11/20 is already reduced you cannot simplify this fraction
First use distributive property:
4(5x - 6) - 4(2x + 1)
20x - 24 - 8x - 4
Then add like terms:
12x - 28
Answer:
My answer would be B.
Step-by-step explanation:
Triangle angles have to add up to a total of 180 degrees. B. has a very close measures in angles. I am sorry if this is not the answer. But let me know.