Answer:
see explanation
Step-by-step explanation:
Using the sum/ difference → product formula
cos x - cos y = - 2sin(  )sin (
)sin ( )
 )
sin x - sin y = 2cos ( )sin (
 )sin ( )
 )
Given
(cosA - cosB)² + (sinA - sinB )²
= [ - 2sin( )sin(
)sin( ) ]² + [ 2cos(
 ) ]² + [ 2cos( )sin(
 )sin( ) ]²
 ) ]²
= 4sin² ( )sin² (
 )sin² ( ) + 4cos² (
 ) + 4cos² ( )sin² (
 )sin² (  )
 )
= 4sin² ( )[ sin² (
 )[ sin² (  ) + cos² (
 ) + cos² (  ) ← sin²x + cos²x = 1
 ) ← sin²x + cos²x = 1
= 4sin² (  ) × 1
 ) × 1
= 4sin² (  ) = right side ⇒ proven
 ) = right side ⇒ proven
 
        
             
        
        
        
Answer:
Step-by-step explanation:
∠Y = ∠P, so AY = AP
Perimeter = AY + AP + 13 = 43
AY + AP = 30
∠Y = ∠P, so AY = AP
AP = 30/2 = 15
 
        
                    
             
        
        
        
Answer: wait I was wrong I saw thinking about something else
yes that is a unit rate.
 
        
                    
             
        
        
        
36% = 36/100 divide both numerator and denominator by 4 gives you 9/25