Angles an and b are supplementary angles. What is the value of m a if m b=43 degree
If angles a and b are supplementary, it means that the sum of their measures is 180 degrees. Since the measure of angle b is given as 43 degrees, we can set up the equation:
m a + m b = 180
Substituting the given value, we have:
m a + 43 = 180
Subtracting 43 from both sides of the equation, we get:
m a = 180 - 43
m a = 137
The measure of angle a is 137 degrees.