Answer:
A is 1 and b is 12
Step-by-step explanation:
Answer:
1 is Answer.
Step-by-step explanation

= 
As we know that ω²+ω+1=0
Thus putting in above equation, we get
= 
Rearranging and simplifying:
= 
= 
= 
= 1 Answer
SOH,CAH, TOA so it would be TANGENT since it would be Opposite over Adjacent. Tan(15) = 9/a put Tan(15) onto your calculator it would be .267949 round that to .27 = 9/a cross multiply
a = 33.588. C is the correct answer.
First, recall that

So if
, then
.
Second,

We know that
and
, which means we should also have
.
Third,

but as we've already shown, we need to have
, so we pick the negative root.
Finally,

Unfortunately, none of the given answers match, so perhaps I've misunderstood one of the given conditions... In any case, this answer should tell you everything you need to know to find the right solution from the given options.