Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why

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 associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
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:
Retries:
restart all cards




share
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

Geometry, Unit 2

Right Triangle Trig

TermDefinition
Adjacent side the leg next to an acute angle in a right triangle that is not the hypotenuse
complementary angles two angles whose sum is 90 degrees
cosine a trigonometric function of an acute angle in a right triangle that is the ratio of the length of the side adjacent to the length of the hypotenuse
hypotenuse the side opposite the vertex of the 90 degree angle in a right triangle
opposite side the side across from an angle
ratio the relation between two quantities; can be expressed in words, fractions, decimals, or as a percentage
reciprocal a number that, when multiplied by the original number, has a product of 1
right triangle a triangle with one angle that measures 90 degrees
scale factor A multiple of the lengths of the sides from one figure to the transformed figure. If the scale factor is larger than 1, then the figure is enlarged. If the scale factor is between 0 to 1, then the figure is reduced.
secant the reciprocal of cosine
cosecant the reciprocal of the sine ratio
cotangent the reciprocal of tangent
similar Two figures that are the same shape but not necessarily the same size. Corresponding angles must be congruent and sides must have the same ratio.
sine a trigonometric function of an acute angle in a right triangle that is the ratio of the length of the opposite side to the length of the hypotenuse
tangent a trigonometric function of an acute angle in a right triangle that is the ratio of the length of the opposite side to the length of the adjacent side
theda a Greek letter commonly used to refer to unknown angle measures
trigonometry the study of triangles and the relationships between their sides and the angles between these sides
altitude the perpendicular line from the vertex of a figure to its opposite side; height
angle of depression the angle created by a horizontal ine and a downward line of sight to an object that is below the observer
angel of elevation the angle created by a horizontal line and an upward line of sight to an object that is above the observer
Created by: MHamlin