Unit 9 – Circular Trigonometry Section 9 Unit 9 – Circular Trigonometry Section 9.1 – Wrapping Function Values No Calculator

(0, 1) (1,0) (-1, 0) (0, -1)

Summary of Denominators of 2

Denominators of 3 Denominators of 6 Denominators of 4

Denominators of 3 Denominators of 6 Denominators of 4

ALMOST 1 (-, +) NUMERATOR 1 (+, +) JUST PAST 1 (-, -) ALMOST 2 (+, -)

Denominators of 3 Denominators of 6 Denominators of 4

+ + + _ _

Let’s try a few more examples….. Num 1 (+, +) 3 = 1 + 2 Past 1 (-, -) 4 = 2 x 2 Almost 2 (+, -) 6 = 3 x 2 Almost 1 (-, +) 3 = 1 + 2 Make Negative Make Negative Past 1 (-, -) 3 = 1 + 2 Make Negative

1 Past 1 (-, -) Numerator 1 (+, +) Almost 2 (+, -) 1 2 1 3

Numerator 1 (+, +) Past 1 (-, -) Almost 1 (-, +) 3 2 1

Numerator 1 (+, +) Almost 2 (+, -) 2 1 Almost 1 (-, +) Past 1 (-, -)