Give the exact value of the trigonometric function. csc225°
A.
B.
C.
D.

Please explain your answer, I will give brainliest, thank you!

Step-by-step explanation:

we want to figure out the exact value of the following:

recall that,

we are given

substitute:

225° belongs to Q:III which we can clearly acquire from unit circle so,

By simplifying complex fraction we get:

notice that, what we acquired isn't in the option so multiply it by √2/√2

simplify multiplication:

simplify square:

reduce fraction:

hence,

our answer is C

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).