Chapter 9 Vocab Flashcards
Adjacent Leg
The side that forms the right angle and is adjacent to angle α
Opposite Leg
The side that forms the right angle and is opposite to angle α
Hypotenuse
The longest side of a right-angled triangle, the side opposite the right angle
Angle of Depression
The angle from the horizontal downward to an object
Angle of Elevation
The angle from the horizontal upward to an object
Sine Ratio
The ratio of the length of the opposite side divided by the length of the hypotenuse.
Cosine Ratio
The ratio of the length of the side adjacent to the angle divided by the length of the hypotenuse of the triangle.
Tangent Ratio
The ratio of the side opposite to the side adjacent the angle they represent.
Inverse Sine Ratio
The inverse sine of a ratio gives the angle in a right triangle whose sine is the given ratio. Inverse sine is also called arcsine and is labeled sin−1 or arcsin???????
idk there wasn’t a definition
Inverse Cosine Ratio
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Inverse Tangent Ratio
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Trigonometry
A branch of mathematics that studies relationships between side lengths and angles of triangles.
