I've been trying so hard to solve this exercise but I honestly can't. It would be so nice of you if you can help me?. Thank you very much!
a. ...start by dividing both sides by 7:
now take the arc cosine of each side:
now multiply each side by
For b and c, you can just plug in values 1,3,5, and -1,-3, -5.
I'll do the first couple:
for height 1:
for height 3:
...and so on.