Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| (a^2)+(b^2)=(c^2) ----> use to find side of right triangle or to help find isosceles triangle height |
|
|
Term
| Area of isosceles triangle |
|
Definition
| Use Pythagorean Theorem to make two right triangles and then use 1/2bh |
|
|
Term
| Circumference of a circle |
|
Definition
|
|
Term
|
Definition
| A = bh (make right triangle to find height) |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| SOH - Sine = Opposite/Hypotenuse |
|
|
Term
| Cosine of a right triangle |
|
Definition
| CAH - Cosine = Adjacent/Hypotenuse |
|
|
Term
|
Definition
| TOA - Tangent = Opposite/Adjacent |
|
|
Term
|
Definition
| Volume = lwh {length*width*height} |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
| Arc length, given an angle in degrees and a radius |
|
Definition
| Arc Length = (angle/360)*circumference |
|
|
Term
| Arc Length given angle in radians and a radius. |
|
Definition
| Arc Length = (angle/(2*pi))*circumference |
|
|
Term
| Arc Length given chord and angle |
|
Definition
Radius = (chord/2)/sin(angle)
(This is just soh-cah-toa)
Use radius in conjunction with angle in either of the other two formulas for arc length to get the arc length. |
|
|
Term
| Arc length given chord and radius. |
|
Definition
Angle = arctan((chord/2)/radius)
This works because the radius is the hypotenuse of this triangle and (chord/2) is the opposite side. Take the angle and the radius and plug them into one of the other formulas for arc length. |
|
|
