Find
cosx=√1+√1+√1−√1+√322222
in radians
my original answer was pi/96, I used the half-angle formula but it was marked incorrect, any ideas what I did wrong and how I can fix it?
The answer works out to 7π32
no, but I would be interested to how you came to your conclusion
I get:
Cos(x) ==0.935905927
x ==Cos^ - 1 ==0.359974158 - radians
x ==0.359974158 ==11 Pi / 96
Thank you!