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# Year 10 Trigonometry

TermDefinition
trigonometric ratio the ratio of two sides of a right angled triangle
sine ratio the ratio of the opposite side to the hypotenuse
cosine ratio the ratio of the adjacent side to the hypotenuse
tangent ratio the ratio of the opposite side to the adjacent side
angle of elevation is the angle of looking up, measured from the horizontal.
angle of depression is the angle of looking down, measured from the horizontal.
bearing an angle measurement used to describe precisely the direction of one location from another.
hypotenuse the longest side of a right angled triangle and is always opposite the right angle.
opposite side the side directly opposite the given angle.
adjacent side the side next to, or an arm of, the given angle.
clinometer an instrument for measuring an angle of elevation or depression
three-figure bearings, angles from 000° to 360° to show the amount of turning measured clockwise from north
Created by: wdobson