+0  
 
-1
85
3
avatar+464 

question 4

 

shreyas1  Oct 11, 2018
 #1
avatar+9722 
+2

question 4

laugh

Omi67  Oct 11, 2018
 #2
avatar+464 
+1

Thank you once again Omi67 

shreyas1  Oct 11, 2018
 #3
avatar+92430 
+1

Using Omi's diagram  and the exterior angle theorem, we have that

 

y  = x + 48      (1)

z   = y + x        (2)

 

Sub  (1)  into ( 2) for y   and we have

 

z  = ( x + 48 ) + x     

z  = 2x + 48

 

So..in the triangle on the right  

 

48 + x + z  = 180

48 + x + (2x + 48) = 180

96 + 3x  = 180

3x  = 180 - 96

3x  = 84

x = 28° =  angle "B"

 

cool cool cool

CPhill  Oct 11, 2018

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