1. BY ESMERALDA GUTIERREZ

2. Definition

3. The adjective complementary isfrom Latin complementum,associated with the verb complere,"to fill up". The adjective complementary is from Latin complementum, associated with the verb complere, "to fill up".

4. Example THESE ARE COMPLEMENTARYBECAUSE (27+63=90). THESE ARE COMPLEMENTARY BECAUSE (27+63=90).

5. In mathematics, the sine function is a function of an angle. In a right triangle, sine gives the ratio of the length of the side opposite an angle to the length.

6.  The sine of an angle equals the cosine of its complementary angle.

7. The tangent of an angle equals the cotangent of its complementary angle. The tangents of complementary angles are reciprocals of each other.

8. Complements of the same angle are congruent. If two angles are each complementary to a third angle, then they’re congruent to each other.

9. THE END