# Sign up for an account

Already have a Quizlet account?

Log in.

###
Pythagorean Triple

A set of three positive integers a, b, and c that satisfy the equation c2=a2+b2

###
Special Right Triangles

Right triabgles whose angle measures are 45, -45, -90, or 30, -60, -90

###
Trigonometric Ratio

A ratio of the lengths of two sides of a right triangle

###
Sine

A trigonometric ratio, abbreviated as sin.

###
Cosine

A trigonometric ratio, abbreviated as cos.

###
Tangent

A trigonometric ratio, abbreviated as tan.

###
Angle of Elevation

When you stand and look up at a point in the distance, the angle that your line of sight makes with a line drawn horizontally

###
Solve a Right Triangle

Determine the measurements of all sides and angles of a right triangle

###
Magnitude of a Vector

The distance from the initial point to the terminal point of a vector

###
Direction of a Vector

Determined by the angle that the vector makes with a horizontal line

###
Equal Vectors

Two vectors that have the same magnitude and direction

###
Parallel Vectors

Two vectors that have the same or opposite directions

###
Sum of Two Vectors

The sum of u=<a1,b1> and v=<a2,b2> is u+v=<a1+a2, b1+b2>

### Please allow access to your computer’s microphone to use Voice Recording.

## We can’t access your microphone!

### Click the icon above to update your browser permissions and try again

Example:

### Reload the page to try again!

Reload

## Press Cmd-0 to reset your zoom

## Press Ctrl-0 to reset your zoom

### It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

## Your microphone is muted

### For help fixing this issue, see this FAQ.