Question

answer attempt 1 out of 2
a =
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Explanation:

Step1: Recognize angle relationship

The vertical line and horizontal line form a right angle ($90^\circ$). Angle $a$ and the $28^\circ$ angle are complementary (sum to $90^\circ$).

Step2: Solve for $a$

Subtract the given angle from $90^\circ$.
$a = 90^\circ - 28^\circ$

Answer:

$62^\circ$