Trigonometry! Trigonometry looks quite challenging

But it really is fairly easy You start out pretty shaky

But you'll get it in time, believe me It mainly involves triangles

And their angles and their sides Still feeling confused?

Just follow this simple guide! Sine, Cosine, and Tangent

Is where we always begin Memorize your identities

And you will surely win SOHCAHTOA is what I use

to remember hypotenuse, opposite, and adjacent Using this on a test or quiz

Will help you get the highest percent Opposite over hypotenuse is Sine

It isn't too hard to find Adjacent over hypotenuse is Cosine

It's a breeze, just follow the lines Adjacent Hypotenuse Opposite Hypotenuse Opposite over adjacent is Tangent

It's so simple that you won't even need a hint Opposite Adjacent For Cosecant, Secant, and Cotangent

Just flip the functions upside down Once you master this simple trick,

there's no need to frown Cosecant is the opposite of Sine

Hypotenuse over opposite is how it's defined Hypotenuse Opposite Secant is the opposite of Cosine

Hypotenuse over adjacent when you flip it this time Hypotenuse Adjacent Cotangent is the opposite of Tangent

Adjacent over opposite is what you'll get Adjacent Opposite The angles of a triangle add up to 180 degrees

These facts about triangles are all that you need A + B + C = 180° Circles and angles are next on the list

Follow our lead and you'll get the gist On your pie circle you will rely

One complete rotation is 2 pi We made the pi circles with Mrs. Grogg's help

Now there's no need to worry or yelp The initial side of an angle is the starting position

The terminal side is the position after rotation The endpoint of the ray is the vertex

Coterminal means the same initial and terminal sides

Let's see whats next! A central angle called a radian

is the same length as the radius The measure of an angle is determined

by the amount of rotation from start to end We use degrees to measure

the amount of rotation all together With this knowledge we have stated

You're sure to be the greatest Just keep your head held high

And when it comes to Trig, reach for the sky!

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