Cofunction
<templatestyles src="Module:Hatnote/styles.css"></templatestyles>
In mathematics, a function f is cofunction of a function g if f(A) = g(B) whenever A and B are complementary angles. This definition typically applies to trigonometric functions.[1]
For example, sine and cosine are cofunctions of each other (hence the "co" in "cosine"):
![]() |
![]() |
The same is true of secant and cosecant and of tangent and cotangent:
![]() |
![]() |
![]() |
![]() |
These equations are also known as the cofunction identities.[1]
This also holds true for the coversine (coversed sine, cvs), covercosine (coversed cosine, cvc), hacoversine (half-coversed sine, hcv), hacovercosine (half-coversed cosine, hcc) and excosecant (exterior cosecant, exc):
![]() |
![]() |
![]() |
![]() |
![]() |
See also
- Vercosine (versed cosine)
- Havercosine (half-versed cosine)
- Covariance
References
<templatestyles src="Asbox/styles.css"></templatestyles>
<templatestyles src="Asbox/styles.css"></templatestyles>