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Sandra is riding the Ferris wheel, and her height can be modeled by the equation H(t) = 25 cos[(pi/14)t] + 31, where H represents the height of the person above the ground in feet at t seconds.
How far above the ground is Sandra before the ride begins?
Stacey Warren - Expert brainly.com
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I thought that I would be substituting t for 0, and then solving, but I got stuck >_<
Right now I have 25 cos(0) + 31
@ganeshie8 @Tootles143 @pooja195
Please can someone help me? :(
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cos(0) = 1 so assign it and you have the height
So .. What before the ride begins mean ?
It means that just starting the ride which implies that it is wanted to get the height at time(t) = 0
then substituting back into the equation with this time you will get :
H(0) = 25 cos( (π/14)*0 ) + 31 = 25 cos(0) + 32 = ?
Solve it Urself ! :D
Let me know if you got it :)
I got 25 32. But I don't know what to do about the space :/
Your equation after subs. by t = 0 will be sth like that : 25 cos(0) + 31 = ....
It's 31 not 32 , I re-corrected it ! :D
Wait so do I add them to get the height or do I leave it as an equation??
You have to add them to get the height
H(0) = 25+32
= 57 which is the height at t=0
Ok thank you guys :) And since it doesn't give a unit of measure, I just say 57 units, right?
"H represents the height of the person above the ground in ""feet"" "
The given unit is "feet" ! :)
So the answer will be : 57 feet above the ground
Oh I can't believe I missed that >_< thanks again!