valentina04
valentina04 valentina04
  • 14-04-2018
  • Mathematics
contestada

How do you solve question 9? Pls help

How do you solve question 9 Pls help class=

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aurorakimber
aurorakimber aurorakimber
  • 14-04-2018
you can use sine law to figure it out

20/3cm = x/7cm

3x = 140
x = 47

but that wouldn't make sense considering the angle is obtuse,

so you could do 180-20-47
and that is 113
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