rissathejawn rissathejawn
  • 26-04-2017
  • Mathematics
contestada

what's length a and length b?

whats length a and length b class=

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Hudayfaad
Hudayfaad Hudayfaad
  • 26-04-2017
The answer is 30 hope it helps 
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ghanami
ghanami ghanami
  • 26-04-2017
hello :
sin(60) =b/12.......b= 12sin(60) =12×(√3/2)= 6√3
cos(60) =a/12 ........a=12cos(60) =12×(1/2) =6
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