Question

Does anyone know what is the cofunction of cosine? and why?

Answer 1

i believe you are refering to the sec function

Answer 2

co is a shortned form of "complement" i believe such that the complement of the sine is cosine

the complement of secant is cosecant

where it fails at is the tangent cotangent i believe

Answer 3

One thing is the inverse, and another is the cofunction. help plzz

Answer 4

waa

Answer 5

"A cofunction of a given trig function (f) is, by definition, the function obtained after the complement its parameter is taken. Since the complement of any angle a is 90° - a, the the fact that the following relations can be shown to hold

sine(90° - a) = cosine(a)
secant(90° - a) = cosecant(a)
tangent(90° - a) = cotangent(a)

justifies the naming convention."

http://math2.org/math/algebra/functions/trig/index.htm

Answer 6

i guess it holds up for cot ...

Answer 7

gee thanks!! ill look it up thanks alot :DD