Precalculus Intro to the Unit Circle

0

1

1/2

√2/2

Sine, cosine, and cotangent

Sine, cotangent, and cosecant

Sine, cosine, and tangent

Cosecant, cosine, and cotangent

the 1st and 2nd quadrants

the 1st and 3rd quadrants

the 1st and 4th quadrants

the 2nd and 3rd quadrants

base, hypotenuse

hypotenuse, adjacent

opposite, hypotenuse

adjacent, opposite

$$\frac{hypotenuse}{adjacent}$$

$$\frac{opposite}{adjacent}$$

$$\frac{adjacent}{hypotenuse}$$

$$\frac{adjacent}{opposite}$$

$$\frac{opposite}{hypotenuse}$$  

$$\frac{opposite}{adjacent}$$  

$$\frac{\sin\left(\theta\right)}{\cos\left(\theta\right)}$$  

$$\frac{hypotenuse}{adjacent}$$