Basic Trig Formulas
What is the mnemonic device used to remember the basic trigonometric formulas?
SOHCAHTOA
1/2 h(b1+ b2)
The formula for a Leg of a 45-45-90 triangle?
Leg = hyp / radical (2)
Formula for total degrees in any polygon?
(n-2)180
The formula for the Volume of a Square?
V = s3
What is the formula for Sine?
Opposite / Hypotenuse
The formula for the area of a triangle?
1/2 bh
The formula for the hypotenuse of a 45-45-90 triangle?
Hypotenuse = Leg * radical(2)
Formula to find a single interior angle of a regular polygon?
(n-2)180 divided by n
The formula for the volume of a rectangular prism?
V = lwh
What is the formula for Cosine?
Adjacent / Hypotenuse
The formula for area of a kite?
1/2 d1d2
What is the short leg formula for a 30-60-90 triangle when given the long leg?
SL = LL / radical(3)
Formula to find a single exterior angle of a regular polygon?
360 / n
The formula for the volume of a triangular prism?
V = 1/2*bhl
What is the formula for Tangent?
Opposite / Adjacent
What is the formula for the area of a circle?
Pi r2
What is the formula for the hypotenuse of a 30-60-90 triangle when given the short leg?
Hypotenuse = SL * 2
Formula to find the area of a polygon?
A = (aP) divide by 2
The formula for the volume of a cone?
V = 1/3*Pi*r2h
What is the formula for Cotangent?
Adjacent / Opposite
What is the formula for the area of a parallelogram?
base * height
bh
What is the Formula for the short leg of a 30-60-90 triangle when given the hypotenuse?
Short Leg = Hypotenuse / 2
Formula to find the volume of a regular polygon?
V = (aP)/2 * height
The formula for the Volume of a Pyramid?
V = (Bh) / 3
V = (bhl)/3