Question

cos(pi/3-pi/6)

Answer 1

cos(pi/3-pi/6),,.... it's an identity
=cos pi/3 cos pi/6 + sin pi/3 sin pi/6
=(1/2)[(sqrt3)/2] + [(sqrt3)/2](1/2)
=(sqrt3)/4 + (sqrt3/4)
=2(sqrt3)/4

Answer 2

0r (sqrt3)/2