Find the length of the missing sides, round your answers to the nearest hundredth.
1 answer:
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60°
the mean is the sum of the 3 angles divided by 3
complementary angle = 90 - x
supplementary angle = 180 - x
sum of angles = x + 90 - x + 180 - x = 270 - x
Hence
mean = = 80 ( multiply both sides by 3 )
270 - x = 240 ( subtract 270 from both sides )
- x = - 30 ( multiply both sides by - 1 )
x = 30
complement of x = 90 - 30 = 60°