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evablogger [386]
3 years ago
15

3. Find the angle complementary to the angle 80°25′. A. 180° B. 9°35′ C. 90° D. 99°35′

Mathematics
1 answer:
svetlana [45]3 years ago
5 0
"Complementary" angles sum to 90°.

Since we are using minutes as well...

80°+d°+25'+m'=90°  subtract 80° from both sides

d°+25'+m'=10°  subtract 25' from both sides

d°+m'=9°+60'-25'

d°+m'=9°+35'

9°35'
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