anonymous
  • anonymous
Evaluate the expression without using a calculator. sin pi/6 + cos pi/6 I'm so lost on how to do this :/
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
sin pi/6 +cos pi/6 this is same as sin 30 + cos 30
dumbcow
  • dumbcow
unit circle https://en.wikipedia.org/wiki/Unit_circle#/media/File:Unit_circle_angles_color.svg (cos,sin)
anonymous
  • anonymous
because pi=180

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anonymous
  • anonymous
Oh okay I understand now. Thanks
anonymous
  • anonymous
sin30= 1/2 and cos 30= \[\sqrt{3/2}\]
anonymous
  • anonymous
now solve \[1/2 +\sqrt{3/2}\]
anonymous
  • anonymous
It says in the back of the book that its \[1+\sqrt{3}/2\] but idk understand how they got the radical
dumbcow
  • dumbcow
from the unit circle
anonymous
  • anonymous
so, 1+\[\sqrt{3}/2\] is the answer
anonymous
  • anonymous
Oh I kind of see
anonymous
  • anonymous
nevermind I do see now
anonymous
  • anonymous
its just simple.since they have same denominator, you just add the numerators
anonymous
  • anonymous
solve, 1/2+1/2= ?
anonymous
  • anonymous
1
anonymous
  • anonymous
very correct. now you understand
anonymous
  • anonymous
thats all

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