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Find the measure of each marked angle. See Example 2 complementary angles with measures 3𝓍 ― 5 and 6𝓍 ― 40 degrees
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1. Measuring Angles
Complementary and Supplementary Angles
Scelta multipla
If the measure of an angle is , what is the measure of its complementary angle?
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Recall that complementary angles are two angles whose measures add up to 90 degrees.
Let the measure of the given angle be \(39^\circ\) and the measure of its complementary angle be \(x\) degrees.
Set up the equation based on the definition of complementary angles: \(39^\circ + x = 90^\circ\).
Solve for \(x\) by subtracting \(39^\circ\) from both sides: \(x = 90^\circ - 39^\circ\).
Simplify the right side to find the measure of the complementary angle.
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