2007-05-04 09:56:08 · 7 answers · asked by r r 1 in Science & Mathematics ➔ Mathematics
almost all scientific calculators have an inverse cosine function, it should look like: cos^-1( ).
if you're using a TI-89, hit the "2nd" button and then press the cosine button.
2007-05-04 10:00:02 · answer #1 · answered by horrid 3 · 0⤊ 0⤋
if you have a TI-89 you can just ask it to solve for you.
Solve(cos(x)=.5,x)
otherwise just take the anticos which will prob be the cos-1 key above the normal cos.
2007-05-04 17:00:19 · answer #2 · answered by ambientdiscord 5 · 0⤊ 0⤋
hit .5 then cos-1x = 60
2007-05-04 17:13:59 · answer #3 · answered by lahomaokie 2 · 0⤊ 0⤋
click shift or 2nd then cos .5
it should look like this :
cos-1 (.5)= 60
2007-05-04 17:00:29 · answer #4 · answered by Anonymous · 0⤊ 0⤋
you use inverse cosign. It looks like
cos^-1
2007-05-04 17:00:49 · answer #5 · answered by Tee 2 · 0⤊ 0⤋
On my old calculator (steam operated!), the sequence is:-
0.5
INV
cos
2007-05-04 18:04:13 · answer #6 · answered by Como 7 · 0⤊ 0⤋
you would do cos^-1 (0.5).
Make sure to set the answer for either DEGREES or RADIANS!
2007-05-04 17:21:16 · answer #7 · answered by the redcuber 6 · 0⤊ 0⤋