Question

what is the value of u?

u =

Explanation:

Step1: Use the triangle angle - sum theorem

The sum of the interior angles of a triangle is \(180^{\circ}\). Let \(\angle E = 40^{\circ}\), \(\angle D=82^{\circ}\), and \(\angle C = u\). Then \(u + 40+82=180\).

Step2: Solve the equation for \(u\)

$$
LATEXBLOCK0
$$

Answer:

\(58\)