Question

what is the value of u?
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Explanation:

Step1: Apply the exterior angle theorem

The exterior angle theorem states that an exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles.
In this case, \(u + 30^{\circ}=u + u\).

Step2: Solve the equation

$$
LATEXBLOCK0
$$

Answer:

\(30\)