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find the measure of the missing angle.
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a=
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Explanation:

Step1: Use the property of a straight angle

A straight angle is \(180^{\circ}\).

Step2: Set up the equation

\(a + 90^{\circ}+33^{\circ}=180^{\circ}\)

Step3: Solve for \(a\)

\(a=180^{\circ}-90^{\circ}-33^{\circ}\)
\(a = 57^{\circ}\)

Answer:

\(57\)