Hi,

I hope someone can help. I'm trying to understand the domain for the reciprocal trigonometric functions. As follows:

For secant function:

For cosecant function:

For cotangent function:

// same as secant function's domain

I know that the domain must exclude values that make the function undefined, but I don't see how that is being communicated. Can someone please help me decipher the domain annotation above?

Sincerely,

Olivia