90 - 43 = 47 degrees.
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78 degree angle
a 10-degree angle
66 degree angle
Complementary angles total 90°. The complement (or complementary angle) of 15° is 75° (90 - 15).
A pair of complementary angles add up to 90 degrees. Therefore, the complement of a 70 degree angle is 90 - 70 = 20 degrees.