1. Plural of cosec; the reciprocal of the sine of an angle in a right triangle, equal to the ratio of the hypotenuse to the opposite side.
Usage: mathematics; trigonometry; abbreviation of cosecant

Examples

• In trigonometry, cosecs are used to solve problems involving right triangles.
• The cosecs of complementary angles have a special relationship.
• Students learn to calculate cosecs using a scientific calculator.
• The table shows the cosecs of angles from 0 to 90 degrees.
• To find the hypotenuse, multiply the opposite side by the cosec of the angle.