What is the value of # cos(pi/8 + pi/8) #?
1 Answer
Jul 16, 2016
Explanation:
#cos(pi/8+pi/8)=cos((2pi)/8)=cos(pi/4)# and
#cos(pi/4)=1/sqrt2#
#cos(pi/8+pi/8)=cos((2pi)/8)=cos(pi/4)# and
#cos(pi/4)=1/sqrt2#