4 9/20 that is the mixed number of 4.45
Answer:
Hmm, this one is confusing. Try B, it seems most probable.
Step-by-step explanation:
Answer: f(5) = 43
Step-by-step explanation:
Can you provide more information?
We know that sin2x=2sinxcosx
(search the net for proof if you wish)
So the original equation becomes
2sinxcosx-sinx=0
The two terms both have sinx that can be taken out to get:
sinx(2cosx-1)=0
This is true if sinx=0 or 2cosx-1=0 , rewritten: cosx=1/2
sinx=0 than x=2kπ
cosx=1/2 than x=π/3+2kπ
where k is an integer
