17 terms

ch. 11

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acute angles
angles that are less than 90°
adjacent
common side
angle of depression
angle created when looking below the line of sight
angle of elevation
An angle formed by a horizontal line and a line of sight above it.
cosine
the ratio of the adjacent leg over the hypotenuse of an angle
horizontal line
a line that is flat and parallel to the ground
hypotenuse
the longest side of a right triangle
identity
always true for the allowed values of the variable
leg
side of a triangle
line of sight
the imaginary line that inculed all that is directly in front of you
literal equation
an equation involving two or more variables
opposite
across from the angle given
ratio
a comparison of two quantities by division
right triangle
a triangle with 1 right angle
sine
Opposite/Hypotenuse
tangent
Opposite/Adjacent
trigonometry
the mathematics of triangles and trigonometric functions