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#1 2007-01-09 04:06:04
- Neha
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- Registered: 2006-10-11
- Posts: 173
Degrees
Find Angle A if three times its complement equals 150degrees .
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#2 2007-01-09 16:19:16
- pi man
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- Registered: 2006-07-06
- Posts: 251
Re: Degrees
An angle plus its complement is always equal to 90. In this case, 3 times the complement is 150 degrees, so the complement is 50 degrees. 50 + A = 90, therefore A = 40.
Last edited by pi man (2007-01-09 16:19:54)
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#3 2007-01-09 16:20:26
- Toast
- Real Member
- Registered: 2006-10-08
- Posts: 1,321
Re: Degrees
Well, seeing as complementary angles add up to 90 degrees and you have three times one of the angles, you can draw these algebraic conclusions:
1.
2.
re-arranging gives:
You can now use simultaneous equations to find angle A.
EDIT: Guess pi man beat me to it 
Last edited by Toast (2007-01-10 16:24:42)
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