14 terms

If the altitude is drawn from the right angle to the hypotenuse of a right triangle,

then the altitude is the...

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...

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