pooja195
  • pooja195
The measure of two angles in a triangle are given. Find the measure of the third angle. 30. 17° and 16.4° [A] 136.6° [B] 359.4° [C] 326.6° [D] 146.6°
Mathematics
katieb
  • katieb
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pooja195
  • pooja195
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
all angles in a triangle add to 180 degrees
jim_thompson5910
  • jim_thompson5910
so if x is the missing angle, and the other two angles are 17 and 16.4, then 17+16.4 + x = 180

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jim_thompson5910
  • jim_thompson5910
and you would solve for x
pooja195
  • pooja195
would i add?
jim_thompson5910
  • jim_thompson5910
at first, yes 17+16.4 + x = 180 33.4 + x = 180 ... add
jim_thompson5910
  • jim_thompson5910
then you would subtract 33.4 from both sides to isolate x
pooja195
  • pooja195
so my answer woood be 146.6 right
jim_thompson5910
  • jim_thompson5910
yep
pooja195
  • pooja195
thank you!!
jim_thompson5910
  • jim_thompson5910
np

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