+0  
 
+4
136
4
avatar+578 

Please help 

 Apr 14, 2022
 #1
avatar+124594 
+2

Law of Sines

 

sin ( A ) / 13  =  sin C / 24

 

sin ( A) / 13  = sin ( 2A) / 24

 

sin (A) / 13  = [ 2sin (A) cos (A)] / 24

 

1/13  = cos ( A  )/ 12

 

12/13 = cos ( A )

 

sin (A)  =  sqrt [ 13^2 - 12^2] / 13  =  5/13

 

sin (C)  =  sin (2A)  =  2sin(A)cos(A)  =  2 (5/13) (12/13)  = 120 / 169

 

 

cool cool cool

 Apr 14, 2022
 #2
avatar+578 
+3

Thanks, CPhill!!!!!!!!!

 

-Vinculum

smileysmileysmileysmileysmiley

 Apr 14, 2022
 #3
avatar+124594 
+1

Welcome  !!!!

 

cool cool cool

CPhill  Apr 14, 2022

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