Complementary Angles
Complementary Angles
Complementary Angles
Complementary angles are angles that add up to 90° (See Diagram). The trigonometric ratios relating complementary angles (A and 90° –A) are as follows:
Complementary angles are angles that add up to 90° (See Diagram). The trigonometric ratios relating complementary angles (A and 90° –A) are as follows:
sin(90° – A) = cos(A)
sin(90° – A) = cos(A)
cos(90° – A) = sin(A)
cos(90° – A) = sin(A)
tan(90° – A) = cot(A)
tan(90° – A) = cot(A)
Next: We will learn how find the trigonometric ratio of angles between 0° and 360° using the Unit Circle.
Next: We will learn how find the trigonometric ratio of angles between 0° and 360° using the Unit Circle.