Question

Evaluate arcos sqroot 3/2

Answer 1

\[\cos^{-1} (\sqrt{3}/2)\] = 30

Answer 2

\[\arccos (cannot find \square \root button, but \square \root of 3/2)(\]

Answer 3

so it's the inverse of COS?

Answer 4

yes..arcos =inverse of cos

Answer 5

The answer should be without a calculator.

Answer 6

So can I use the unit circle?

Answer 7

I just noticed it should be in radians.

Answer 8

yup, use unit circle, u will find it to be pi/6

Answer 9

u can fine it in degree.. and then multiply it with pi/180.. it will give answer in radian

Answer 10

just to understand, how do I find the degree without a calculator?

Answer 11

need any help @Butler

Answer 12

i will give you hint
http://answers.yahoo.com/question/index?qid=20090227105545AAnqVyR

Answer 13

Thanks that's a great link. It helped me link the process together better!

Answer 14

welcome......