sin(90° − θ) = cos θVariables
- θ
- angle in degrees
Reference details
- Subject
- Trigonometry
- Topic
- identities
- Plain text
sin(90 degrees-theta) = cos theta
Trigonometry · identities
Relates sine of a complement to cosine.
sin(90° − θ) = cos θsin(90 degrees-theta) = cos theta