90 - 30...
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An angle and its complement add to 90 degrees. Hence an angle of 41 degrees has 49 degrees as its complement.
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Since the sum of the two complement angles is 90⁰ , then the complement of a 60⁰ angle is a 30⁰ angle.
Assuming two angles are complementary, an angle can have the same measure as it's complement when it measures 45 degrees. BECAUSE 45 +45 =90!!
The complement of an angle which measures D degrees, where D must be less than 90, is 90 - D.