We have:

Then we use trigonometric identities to change the negative sign of the trigonometric functions, so:

We clear f(x):

we simply what we can:

Thus, the correct answer is;
Answer:
MARK ME BRAINLIEST BRO!!!!!!!!
Step-by-step explanation:
6+7+8
6+8+7
7+6+8
7+8+6
8+7+6
8+6+7
No. 61 is an odd number not divisible
1 km = 0.621 mi
5 km = 3.105
All you need is to do is 5 x 0.621