Answer:
840
Step-by-step explanation:
i dont really know
The answer is B) Two times the sum of a number and two. That would be completely different that twice a number plus two.
Hope this helps!
Answer: option D
Step-by-step explanation:
Remember the cosine identity:

Given the right triangle DFE shown in the image, you can identify that the adjacent side and the hypotenuse for the angle F of this triangle are:

Now you can substitute values into
and then reduce the fraction.
THerefore you get: