None of these. All of these functions are defined as ratio of trigonometric functions.
Trigonometric functions have infinite zeroes, so when you put them in the denominator, they lead to infinitely many points of ill-definition.
Specifically, we have:
which is undefined at
which is undefined at
which is undefined at
which is undefined at
Is there a picture that goes with the question ?
Answer:
x₁ = 6 and x₂ = 8
Step-by-step explanation:
See the picture below
Answer: one hundred and twenty five million
Add the sides then what ever you got add that up with 9 yd