Cambridge International AS and A Level Mathematics Pure Mathematics 1

Trigonometry

P1^

7

–0.5

–1

–360° –270° –180° –90° 0 90° 180° 270° 360°θ

1

0.5

y

y = cos θ

principal values

–0.5

–1

–360° –270° –180° –90° 0 90° 180° 270° 360°θ

1

0.5

y

y = sin θ

principal

values

–1

–3

–360° –270° –180° –90° 0 90° 180° 270° 360°θ

3

1

y

y = tan θ

principal

(^2) values
–2
Figure 7.19