Question

theta=arccos1

Answer 1

well do you know what the cos curve looks like...?

Answer 2

nope

Answer 3

ok...do you have a calculator...?

Answer 4

yes

Answer 5

does it have a key

cos

and above it in another colour is

\[\cos^{-1}\]

Answer 6

yes I see it

Answer 7

wait is it zero? the answer?

Answer 8

ok... press the key that says 2nd or perhaps shift... then cos

the screen displays

\[\cos^{-1}(\]

enter 1 and close the brackets and then press =

Answer 9

yes I did and I got 0

Answer 10

and the problem said to leave the answer in degrees and radians.

Answer 11

ok... so its 0 degrees and zero radians... an alternate answer, because of the cyclic nature of the curve is 360 degrees or 2 pi radians

Answer 12

ok I understand thanks so much !!