Question

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!

Answer 1

see explanation

Explanation:

a. ...start by dividing both sides by 7:

`h/7 = cos(pi/3t)`

now take the arc cosine of each side:

`cos^-1(h/7) = pi/3t`

now multiply each side by `3/pi`:

`(3(cos^-1(h/7)))/pi = t`

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:
`(3(cos^-1(1/7)))/pi = t`

`= 3(cos^-1(0.143))/pi`

`=3(1.43)/pi`

`= 1.36`

for height 3:
`(3(cos^-1(3/7)))/pi = 1.08`

...and so on.

GOOD LUCK!