abbreviation

cosine

noun

in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side between the angle and the right angle divided by the length of the hypotenuse

noun

in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side between the angle and the right angle divided by the length of the side opposite the angle

noun

a unit for measuring angles. Measurements are often expressed as a number followed by the symbol °

noun

a line drawn from one of the points of a triangle to the opposite side

noun

one of the 60 parts of a degree (=a unit used in the measurement of angles)

adjective

an oblique angle is any angle that is not 90°, 180°, or 270°

adjective

forming an angle of 90° at the point of meeting

adjective

forming a 90° angle with another surface or line

abbreviation

sine

noun

in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side opposite the angle divided by the length of the hypotenuse

noun

in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side opposite the angle divided by the length of the side between the angle and the right angle

adjective

a tight angle is a very small angle that gives you very little space to do something

adjective

if one thing is at right angles to another thing, they form an angle of 90 degrees at the point where they meet