English Deutsch Français Italiano Español Português 繁體中文 Bahasa Indonesia Tiếng Việt ภาษาไทย
All categories
2 ⤊

prove that:?

(b+c)cosA+(c+a)cosB+(a+b)cosC=a+b+c

2006-11-04 17:20:40 · 1 answers · asked by frank castle 1 in Science & Mathematics ➔ Mathematics

1 answers

~~~I need to go take some asprin first,,,cause that question makes my head hurt,,,,,

2006-11-04 17:23:53 · answer #1 · answered by ~~Penny~~ 5 · 2⤊ 0⤋

fedest.com, questions and answers