Busy. Please wait.

Forgot Password?

Don't have an account?  Sign up 

show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the email address associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know (0)
Know (0)
remaining cards (0)
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Radians the measure of a central angle subtending an arc equal in length to the radius: equal to 57.2958°
Degrees A division of a circle, equal to 1 / 360 of its circumference.
Coterminal Angle Two angles are coterminal if they are drawn in the standard position and both have their terminal sides in the same location.
Unit Circle A unit circle is a circle that has a radius of one unit.
Reference Angle The smallest angle that the terminal side of a given angle makes with the x-axis.
Sine Sine= Opposite/Hypotenuse
Cosine Cosine= Adjacent/Hypotenuse
Tangent Tangent= Opposite/Adjacent
Cosecant Cosecant= Hypotenuse/Opposite
Secant Secant= Hypotenuse/Adjacent
Cotangent Cotangent= Adjacent/Opposite
Inverse (of a proportion) containing terms of which an increase in one results in a decrease in another. A term is said to be in inverse proportion to another term if it increases (or decreases) as the other decreases (or increases).
Arccos The arccos function is the inverse of the cosine function. It returns the angle whose cosine is a given number.
Arctan The arctan function is the inverse of the tangent function. It returns the angle whose tangent is a given number.
Law Of Sines a law stating that the ratio of a side of a plane triangle to the sine of the opposite angle is the same for all three sides.
Law Of Cosines a law stating that the square of a side of a plane triangle is equal to the sum of the squares of the other two sides minus twice the product of the other sides multiplied by the cosine of the angle between them.
Created by: lunawolfe815