anonymous
  • anonymous
suppose angle B=60 degrees, and length of b=2
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
hartnn
  • hartnn
what have you tried? :)
anonymous
  • anonymous
angle a is 30 degrees

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anonymous
  • anonymous
which means b is 60 degrees
hartnn
  • hartnn
A=30 is correct, B = 60 is given, go on
anonymous
  • anonymous
tan30=a/2
anonymous
  • anonymous
2*tan(30)=a/2
hartnn
  • hartnn
a =2 tan 30
anonymous
  • anonymous
which is 1.15 which is just 1
anonymous
  • anonymous
they want the exact measures
hartnn
  • hartnn
since we are not allowed decimals, whats tan 30 in fraction ?
anonymous
  • anonymous
1/sqrt3
hartnn
  • hartnn
or lets try to get 'c' first using sin B
hartnn
  • hartnn
ok, thats correct, so a = 2/\sqrt 3
hartnn
  • hartnn
\(a= \dfrac{2}{\sqrt 3 }\)
anonymous
  • anonymous
so sin60=2/c, 2*sin60,
anonymous
  • anonymous
sin of 60 degrees is sort(3)/2
anonymous
  • anonymous
sqrt*
hartnn
  • hartnn
yes sqrt 3/2 = 2/c so c = 2*2/ sqrt 3 = ...
anonymous
  • anonymous
4/sqrt(3)
hartnn
  • hartnn
\(\huge \checkmark \)
anonymous
  • anonymous
so basically we are transforming the degrees into the coordinates of either sin or cos .. i'm slow :)
hartnn
  • hartnn
i didn't get that :P we are trying to find the missing angles and sides of a triangles using sin/cos/tan ....
anonymous
  • anonymous
but every coordinate on the unit circle has either a sin and cos.. just clarifying :D
hartnn
  • hartnn
yes, that is true!

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