Answer:
a. 0.25
Step-by-step explanation:
The given expression is 

Factor the denominator using difference of two squares.

Cancel out common factors;

We plug in 2 to get


 
        
                    
             
        
        
        
Answer:
cos(π/3)cos(π/5) + sin(π/3)sin(π/5) = cos(2π/15)
Step-by-step explanation:
We will make use of trig identities to solve this. Here are some common trig identities.
Cos (A + B) = cosAcosB – sinAsinB
Cos (A – B) = cosAcosB + sinAsinB
Sin (A + B) = sinAcosB + sinBcosA
Sin (A – B) = sinAcosB – sinBcosA
Given cos(π/3)cos(π/5) + sin(π/3)sin(π/5) if we let A = π/3 and B = π/5, it reduces to
cosAcosB + sinAsinB and we know that
cosAcosB + sinAsinB = cos(A – B). Therefore, 
cos(π/3)cos(π/5) + sin(π/3)sin(π/5) = cos(π/3 – π/5) = cos(2π/15) 
 
        
             
        
        
        
Answer: I believe it would be 9 feet tall.
Step-by-step explanation:
The statues shadow is 2 times larger than the childs shadow so you would multipy the childs height by 2
 
        
                    
             
        
        
        
Answer:
the answer is 3cm 
HOPE THIS WORKED
Step-by-step explanation:
I JUST ANSWERED THIS ON EDG