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 trigonometry and a triangle (Posted on 2004-02-26)
Prove that in a triangle ABC,:

sin(A)sin(B)sin(C) + cos(A)cos(B) = 1

implies:

A = B = 45° and C = 90°.

 See The Solution Submitted by mohan Rating: 2.7143 (7 votes)

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 Subject Author Date My solution Alexis 2006-08-21 00:58:11 What I think!! Nebo 2004-08-19 10:44:27 re: A start... TCNZ 2004-06-16 18:21:59 trigonomentry and a triangle liam 2004-03-13 11:18:40 re(2): solution mohan 2004-02-29 03:08:26 easier solution eleusive 2004-02-28 23:37:55 lol matt runchey 2004-02-27 17:36:49 re(2): solution Charlie 2004-02-27 07:22:17 re: solution Federico Kereki 2004-02-27 06:43:35 re: solution Brian Wainscott 2004-02-26 16:37:05 solution jacob 2004-02-26 16:21:36 Quick Guess red_sox_fan_032003 2004-02-26 16:19:24 A start... Brian Wainscott 2004-02-26 16:13:30 Wow first post Rawlyn 2004-02-26 15:36:04

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