Question

1. 77^{circ} x

Explanation:

Step1: Use the property of complementary angles

Complementary angles sum to \(90^{\circ}\). So, \(x + 77^{\circ}=90^{\circ}\)

Step2: Solve for \(x\)

Subtract \(77^{\circ}\) from both sides: \(x = 90^{\circ}-77^{\circ}\)

Answer:

\(x = 13^{\circ}\)