Which trigonometric function is equivalent to f(x)=sinx ?

f(x)=cos(x-3pi/2)
f(x)=cos(x-pi/2)
f(x)=cos(-x-pi/2) < -- i think this one, not sure
f(x)=cos(x+pi)

 The correct option is (B)

Step-by-step explanation:  We are given to select the correct trigonometric function that is equivalent to the following trigonometric function :

Option (A) :

Here, the given function is

So, this option is incorrect.

Option (B) :

Here, the given function is

So, this option is CORRECT.

Option (C) :

Here, the given function is

So, this option is incorrect.

Option (D) :

Here, the given function is

So, this option is incorrect.

Thus, (B) is the correct option.

what are you trying to solve here

step-by-step explanation:

$2416.6

step-by-step explanation:

per hour = $ 25

total work time = 35

commission = 15%

total she has to make = $ 4,500

let she sold x dollar products

so her commission will be 15 % of x

now

total = weekly basic pay + commission

4500= (25*35) + 15 % of x

4500=875 + * x

4500-875 =   * x

3625= * x

multiplying wwith 100 on both sides gives

36250 = 15 x

now

x =  

x= $2416.6