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almond37 [142]
3 years ago
14

Evaluate: 8 – 4(5) + 12. Work and explanation please!

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
8 0
8-4(5)+12
8-20+12
20-20
0

Hope this helps :)
gogolik [260]3 years ago
3 0
8-4(5)+12
8-20+12
-12+12
0
That should be your answer
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In this question, we have to find the complement and supplement of the given angles .

Complementary angles are those angles whose sum is 90 degree and supplementary angles are those angles whose sum is 180 degree.

So to find the complement and supplement angles, we need to subtract the given angles from pi/2 and pi respectively .

a.

\frac{ \pi}{10}
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Supplement  \ angle = \pi - \frac{ \pi}{10} = \frac{9 \pi}{10}

b.

\frac{9 \pi}{10}
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