One way is to divide the numerator by the denominator. For a mixed number make the fraction improper and do the same.
trigonometric functions state that cosine functions are even so that automatically rules out the first two options.
sine functions are odd so the last two are right.
odd functions: f(-x)=-f(x)
so the sine would be: sin(-x)=-sin(x)
the third option should be the right answer
using X for your mystery number, the answer is:
x + 11 · x + 8
Answer:
I believe it's
Step-by-step explanation:
A
however I could be wrong