Answer:
See Explanation
Step-by-step explanation:
<em>Question like this are better answered if there are list of options; However, I'll simplify as far as the expression can be simplified</em>
Given

Required
Simplify

Represent  with a
 with a
Represent  with b
 with b
The expression becomes

Factorize



Recall that 
  
 

The expression  becomes
 becomes

..............................................................................................................................
In trigonometry

Subtract  from both sides
 from both sides


..............................................................................................................................
Substitute 1 for  in
 in 

Open Bracket
 ------------------This is an equivalence
 ------------------This is an equivalence

Solving further;
................................................................................................................................
In trigonometry


Substitute the expressions for secx and tanx 
................................................................................................................................
 becomes
 becomes

Open bracket


Add Fraction
 ------------------------ This is another equivalence
 ------------------------ This is another equivalence
................................................................................................................................
In trigonometry

Make  the subject of formula
 the subject of formula

................................................................................................................................
Substitute the expressions for  for
 for 

Open bracket

 ---------------------- This is another equivalence
 ---------------------- This is another equivalence
 
        
             
        
        
        
Answer:
284.52
Step-by-step explanation:
total area = area of semi circle + area of rectangle 
area of semicircle = pi r^2 /2.
= 3.14 * (12/2) ^2 ...divided by 2 
= 56.52
area of rectangle = length * breadth 
= 19*12
= 228
 
        
                    
             
        
        
        
2:4  3:6  4:8
Any ratio equals 1:2 as long as you can divide the first number by itself to get 1 and the second number with the 1st number.
Example
2:4
Divide the first number by 2 and you get 1 
Divide the second number by 2 and you get 2
So the ratio equals 1:2
Please make me brainliest
        
                    
             
        
        
        
Answer:
Your answer is.....
In every big pieces there will be 3 * 1/3 pieces.
So total 12 of 1/3 pieces
Mark it as brainlist answer . follow me for more answer. 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Total Rate= 220$ and length = 13 ft
 13/220$ 
 = 1/16.92$
Unit = 16.92$