Question

Find the missing value to the nearest hundredth.

cos ___ = 9/20

Answer 1

cos(t) = 9/20

t = arccos(9/20)

Answer 2

I'm sorry I'm really bad at this but what is arccos?

Answer 3

its the inverse function to cosine

Answer 4

it undoes a cosine

Answer 5

\[t= cos^{-1}(9/20)\]
might be a more familiar notation for you

Answer 6

Yes it is thank you

Answer 7

yw

Answer 8

i got no idea of the actual value without a calculator tho

Answer 9

google arccos(9/20) if need be and itll pop out a radian value for you

Answer 10

So it's 63.26 degrees I think.
Thank you so much

Answer 11

thats sounds about right :)