Question

i really need help with this please!! picture posted below!:)

Answer 1

but... i suck at math

Answer 2

@Hero ?

Answer 3

@ganeshie8

Answer 4

@phi

Answer 5

helo i remember you kelly

Answer 6

First, what is the average height of the water ?

Answer 7

uhh.. 40?

Answer 8

no

Answer 9

can you figure out the average height ? (min+max)/2

Answer 10

or its 32 right?

Answer 11

the range

Answer 12

yes, the average is 32 inches

Answer 13

or oh i forget

Answer 14

midan!!!

Answer 15

any idea what the cosine varies over ?

Answer 16

wait no

Answer 17

?

Answer 18

umm not really..:/

Answer 19

a cosine goes from +1 to -1 and is centered at zero

Answer 20

blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Answer 21

if we add 32 like this
cos(stuff) + 32
it will be centered at 32 and vary by +1 to -1 about 32

Answer 22

@phi you are a blaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Answer 23

no a monter not a blaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Answer 24

but we want to vary +20 to -20 about 32 (52 to 12)

any idea what we multiply the cos by to change it from varying by 1 to varying by 20 ?

Answer 25

honestly, no..:/

Answer 26

@phi, what can i multiply it by?

Answer 27

oh wait.. couldnt you multiply it by 20? since it was one, and one times 20 is 20:) right?

Answer 28

Here is a picture of a cosine