
Home > CCG > Chapter 5 > Lesson 5.1.4 > Problem 5-46
5-46.
Estelle is trying to find
Write an equation that Estelle could use to solve for
.
Use the Triangle Angle Sum Theorem to calculate the missing angle, this means all the angles in a triangle total
Place a "
Which equation can be used to solve for
Without a calculator, how could Estelle find
? Explain.