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trigonometry and a triangle (Posted on 2004-02-26) Difficulty: 4 of 5
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)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
My solutionAlexis2006-08-21 00:58:11
What I think!!Nebo2004-08-19 10:44:27
re: A start...TCNZ2004-06-16 18:21:59
trigonomentry and a triangleliam2004-03-13 11:18:40
re(2): solutionmohan2004-02-29 03:08:26
easier solutioneleusive2004-02-28 23:37:55
lolmatt runchey2004-02-27 17:36:49
re(2): solutionCharlie2004-02-27 07:22:17
Some Thoughtsre: solutionFederico Kereki2004-02-27 06:43:35
re: solutionBrian Wainscott2004-02-26 16:37:05
solutionjacob2004-02-26 16:21:36
Quick Guessred_sox_fan_0320032004-02-26 16:19:24
A start...Brian Wainscott2004-02-26 16:13:30
Wow first postRawlyn2004-02-26 15:36:04
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