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BY ESMERALDA GUTIERREZ

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Definition

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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".

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

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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.

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

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

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

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