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14 terms

Geometry Chapter 7 Flashcards

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If the altitude is drawn from the right angle to the hypotenuse of a right triangle,
then the altitude is the...
geometric mean of the two parts of the hypotenuse
If the altitude is drawn from the right angle to the hypotenuse of a right triangle,
then the leg is the...
leg is the geometric mean of the hypotenuse and the part of the hypotenuse adjacent to that leg
In a 45-45-90 triangle, what do the legs represent?
x
In a 45-45-90 triangle, what does the hypotenuse represent?
x root 2
In a 30-60-90 triangle, what does the hypotenuse represent?
2x
In a 30-60-90 triangle, what does the short leg represent?
x
In a 30-60-90 triangle, what does the long leg represent?
x root 3
What is the reciprocal of sine?
cosecant
What is the reciprocal of cosine?
secant
What is the reciprocal of tangent?
cotangent
angle of elevation
the angle between an observer's line of sight and a horizontal line when an observer is looking up
angle of depression
the angle between an observer's line of sight and a horizontal line when an observer is looking down
law of sines
sinA/a = sinB/b
law of cosines
a^2 = b^2 + c^2 - 2bc cosA