Trig Exam 1

cos

x

sin

y

tan

sin/cos or y/x

sec

1/cos or 1/x

csc

1/sin or 1/y

cot

cos/sin or x/y

Even f(x)’s

cos and sec (will always be positive)

Odd f(x)’s

sin, tan, csc, cot

What is the reference point for π/4 in standard position on the unit circle?

(√2/2, √2/2)

What is the reference point for π/6 in standard position on the unit circle?

(√3/2, 1/2)

What is the reference point for π/3 in standard position on the unit circle?

(1/2, √3/2)