Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

11 Cards in this Set

  • Front
  • Back
SIN formula
opposite leg / hypotenuse
COS formula
adj leg / hypotenuse
you can only use trigonometry with ______ of a triangle.
the actue angles, never the right angle
TAN formula
opposite leg / adjacent leg
Angle of elevation
the angle between the line of sight and the horizontal when looking up (the angle in the bottom left of an example right triangle with the right angle on the right)
Angle of depression
The angle between the line of sight and the horizontal when looking down (equal to the angle of elevation...on the outside when looking across from the top of the triangle)
Law of Cosines
Law of Sines
Sin(A / a = Sin(B / b
to get the interior sum of a convex polygon=
regular polygon
sides and angles are all congruent
ways to prove a quadrilateral is a parallelogram
1) congruent opposite sides
2) congruent pairs of opposite angles
3) Diagonals bisect each other
4) If one pair of opposite sides is both congruent and parallel.
5) consecutive angles are supplementary