It is 360 degrees.
2pi
2*pi radians.
Elephant
2*Pi
2PI
It is the reciprocal of the sine ratio.
The answer depends on whether the angle is 20 degrees or 20 radians.
2/sqrt(3) or (2sqrt(3))/3
It is the same period as cosine function which is 2 pi because sec x = 1/cos x
yes
That is the correct spelling of the geometric term "secant."
Sometimes