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#2 2007-08-08 09:49:53
- JaneFairfax
- Legendary Member
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Re: prove
First you show that sin80° = sin40° + sin20°. I have set this as a separate exercise for you to do:
http://www.mathsisfun.com/forum/viewtop … 580#p76580 
∴
Last edited by JaneFairfax (2007-08-08 09:53:15)
#4 2007-08-08 11:00:30
- MathsIsFun
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Re: prove
Nice job there Jane.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
