Question

how do I get from 'cos c= 0.875' to 'c= 28.96'? I tried coz^-1 but all that geve me was 0.505361 to 5dp?

Answer 1

check if the calculator is in degrees or radians

Answer 2

And how would I do that? :L

Answer 3

hmm idk which calculator u using... .

wolfram gives both degrees and radians by default,

http://www.wolframalpha.com/input/?i=acos%28.875%29

Answer 4

ohh thanks man!

Answer 5

or you can multiply the radians measure u got 0.505361 wid \(\frac{180}{\pi}\) to get the degrees measure

Answer 6

ahhh ok mate thankyou!