Okay, here we are, basic triangle trigonometry. Here are a few things that will come in handy:
Trigonometric Properties:
SOH CAH TOA
sine=((opposite)/(hypotenuse))
cosine=((adjacent)/(hypotenuse))
tangent=((opposite)/(adjacent))
And the less commonly used: CHO SHA CAO
cosecant=((hypotenuse)/(opposite))
secant=((hypotenuse)/(adjacent))
cotangent=((adjacent)/(opposite))
~ Use the functions above when solving for a side
~ Use the inverses of the functions above when solving for an angle.
Naming Parts of a Triangle:
A triangle’s sides are labeled as lowercase letters.
A triangle’s edges are labeled as either capital or greek letters (alpha, beta, gamma, delta, phi, psy, omega, theta, etc).
Geometric Properties:
The sum of the angles of a triangle add up to 180°. In other words, if you know 2 angles of a triangle you can subtract those from 180 to find the third angle!
The sum of the angles of any polygon with 4 or more sides add up to 360°.
Hope this helps!
