Answer:
83 degrees
Step-by-step explanation:
In order to find the angle x, you need to find all the angles inside the triangle.
You have already been given the angle 43 degrees, which is inside the triangle, but you dont know the other angle inside the triangle.
However, you have been given the angle 126 degrees, which is outside the triangle.
You can see that the base of the triangle consists of a straight line. And the angles on a straight line add up to 180 degrees.
So to find the missing internal angle of the triangle:
180 - 126 = 54 degrees.
Now you have 2 internal angles, but you are missing one, which is x.
all the angles in a triangle add up to 180 degrees.
T
herefore to find x, you add the two internal angles of the triangle and then subtract it from 180 degrees:
180 - (54 + 43) = 83 degrees
Sorry for the longwinded explanation, but I hope it helps.
