click below
click below
Normal Size Small Size show me how
Trigonometric ID's
Fundamental Trigonometric Identities
Question | Answer |
---|---|
csc θ | 1/sin θ |
sec θ | 1/cos θ |
cot θ | 1/tan θ |
tan θ | sin θ/cos θ |
cot θ | cos θ/sin θ |
sin² θ + cos² θ | 1 |
1 + tan² θ | sec² θ |
1 + cot² θ | csc² θ |
sin(π/2 - θ) | cos θ |
tan(π/2 - θ) | cot θ |
sec(π/2 - θ) | csc θ |
sin(-θ) | -sin θ |
cos(-θ) | cos θ |
tan(-θ) | -tan θ |
cos(u ± v) | cos u cos v ± sin u sin v |
sin(u ± v) | sin u cos v ± sin v cos u |