chapter 4

Question 1

sin important points

Answer 1

(0, 0) (pi/2, 1) (pi, 0) (3pi/2, -1) (2pi, 0)

Question 2

cos important points

Answer 2

(0, 1) (pi/2, 0) (pi. -1) (3pi/2, 0) (2pi, 1)

Question 3

tan important points

Answer 3

VAS -pi/2, INT -pi/4, -1, X INT 0, 0 INT pi/4, 1 VAS pi/2,

Question 4

csc important points

Answer 4

VAS -pi, INT -pi/2, -1 VAS 0, INT pi/2, 1, VAS pi

Question 5

sec important points

Answer 5

VAS -pi/2 INT 0, 1 VAS pi/2 INT pi, -1, VAS 3pi/2

Question 6

cot important points

Answer 6

VAS 0, INT pi/4, 1 X INT pi/2, 0 INT 3pi/4, -1, VAS pi