Question #7a99d

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Answer 1 · 2017-09-25T16:32:34

See below.

The sum of an angle an its complement is #90^o#

If we add the ratio numbers together, we can then divide them into the #90^o#

#7+2 = 9#

#90^o/9=10^o#

So we have:

#7xx10^o=70^o#

#2xx10^o = 20^o#

Notice:

#7:2 = 70^o:20^o#

This question doesn’t make too much sense.
If you know on angle, then its complement is just this:

If known angle= #theta# Then unknown angle is:

#90^o-theta#