Question

Find the value of x.
43°
x = [ ? ]
X
Enter

Answer 1

x = 137

Explanation:

Remark

What you have is a cyclic quadrilateral. That is a 4 sided figure whose angle vertices touch the circle's circumference. The sum of angles opposite each other = 180 degrees.

Givens

<1 = 43 degrees

x

Sum of x and <1 = 180 degrees.

Solution

x + 43 = 180 Subtract 43 from both sides

x + 43-43 = 180-43 Combine

x = 137