Everything Maths Grade 10

b)

90 180 270 360

 3

 2

 1

1

2

3

y= 2cos

E

x

y

41.State the coordinates atEand the domain and range of the function in the interval shown.

90 180 270 360

 8

 7

 6

 5

 4

 3

 2

 1

1

2

3

4

5

6

7

8

y=tan 1

E

x

y

42.For which values ofis the function decreasing, in the interval shown?

90 180 270 360

 1

1

2

3

y= 2cos+ 1

x

y

Chapter 6. Functions 225