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stinger
LIF Adult
Member since 11/11 4971 total posts
Name:
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7th grade math help!
If angle A = 78 what is the measure of a complement of a complement of angle A?
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Posted 6/7/16 4:59 PM  |
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mommy2be716
LIF Adult
Member since 1/16 2921 total posts
Name:
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7th grade math help!
complementary means the angles add up to 90 degrees. If angle A is 78, then the measure of angle A's complement would be 12 degrees because 90-78= 12
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| Posted 6/7/16 8:35 PM |
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MrsT809
LIF Adult
Member since 9/09 12167 total posts
Name:
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7th grade math help!
A complement of angle a is 12 degrees as explained above. The complement of 12 degrees would take you back to 78 again.
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| Posted 6/7/16 8:46 PM |
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ANewDayHasCome
Love multiplies, not divides
Member since 11/12 14481 total posts
Name:
Me
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7th grade math help!
Omg my kids are screwed. I don't remember crap...and I was in AP math
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| Posted 6/7/16 8:47 PM |
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stinger
LIF Adult
Member since 11/11 4971 total posts
Name:
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Re: 7th grade math help!
Thanks all. DD said the 2nd "complement" must have been a typo.
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| Posted 6/7/16 9:36 PM |
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MrsT809
LIF Adult
Member since 9/09 12167 total posts
Name:
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Re: 7th grade math help!
Posted by stinger
Thanks all. DD said the 2nd "complement" must have been a typo.
As a former math teacher I wouldn't think it was a typo. I think they just want her to make the connection that if you take the complement of the complement you alwaysg et back to what you started with.
The complement of 30 is 60. The complement of 60 is 30. Same for 78. The complement of 12 is back to 78.
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| Posted 6/7/16 10:11 PM |
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stinger
LIF Adult
Member since 11/11 4971 total posts
Name:
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Re: 7th grade math help!
Posted by MrsT809
Posted by stinger
Thanks all. DD said the 2nd "complement" must have been a typo.
As a former math teacher I wouldn't think it was a typo. I think they just want her to make the connection that if you take the complement of the complement you alwaysg et back to what you started with.
The complement of 30 is 60. The complement of 60 is 30. Same for 78. The complement of 12 is back to 78.
Thank you!
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| Posted 6/8/16 8:23 AM |
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