Answer:
cos(x-30)=1/2
Step-by-step explanation:
We use the following relationship to obtain cos(x)

From that, we have that cos(x)= sqrt(1-1/4)=sqrt(3) / 4
To obtain the value of cos(x-30), lets remember the following expression:

Therefor, we can use that to obtain our desired function cos(x-30)
cos(x)*cos(30)+sin(x)*sin(30)

=2/4=1/2
The answer is 12 m.
Because you're not studying!
Next time do your mom.
Answer:
A) The numerator is 10.
B)The numerator is 18.
C)The numerator is 8.
D)The numerator is 16.
Step-by-step explanation:
A) 


The numerator ,a = 10.
B) 


The numerator, b = 18.
C) 


The numerator ,c = 8.
D)


The numerator,d = 16.