The function is even will be y = sec x and y = cos x. Then the correct options are C and D.
What is an even function?
Even Function - A true function f(x) is said to be an even function if the output value of f(-x) is the same as the f(x) for all values of x in the domain of f.
The equation should be stored in an even function:
f(-x) = f(x)
Check all that apply.
a. y = csc x, then replace x with -x. Then we have
y = csc -x
y = 1/sin -x
y = - 1/ sin x
y = -csc x
b. y = sin x, then replace x with -x. Then we have
y = sin -x
y = - sin x
c. y = sec x, then replace x with -x. Then we have
y = sec-x
y = 1/cos -x
y = 1/ cos x
y = sec x
d. y = cos x, then replace x with -x. Then we have
y = cos -x
y = cos x
Thus, the function is even will be y = sec x and y = cos x.
Then the correct options are C and D.
More about the even function link is given below.
https://brainly.com/question/3975387
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