Hello

I got 2 questions, which seems hard to follow any ideas in how to start off?

SetS of generators of group G is called a minimal set of generators if

for all s 2 S, the set S n fsg is no longer a set of generators. Find a minimal

set of generators for D6

and this one is complex

Use complex numbers to prove that cos4(beta)+ sin4 (beta)=(1/4)(3 + cos 4(beta)).

Any help is appreciated

Thank you

Belzelga