Search found 56 matches
- Wed Apr 27, 2011 3:00 am
- Forum: Geometry
- Topic: Proving orthocentre's existence
- Replies: 12
- Views: 7641
Re: Proving orthocentre's existence
may be u mean indifferent lines ?
- Wed Apr 20, 2011 10:22 pm
- Forum: Geometry
- Topic: DRAW A MAP BY FOUR COLOURS (am i solve it ?)
- Replies: 3
- Views: 3268
Re: DRAW A MAP BY FOUR COLOURS (am i solve it ?)
let i define two country as d1 and d2. if they have some common neighbouring country then they can be colour by only c3 and c4 because c1 and c2 are d1 and d2's own colour[there d1,d2 neighbour of each other ].if d1 not neighbour of d2 then they both can colour by c1 and their common n. c. can colou...
- Sun Apr 17, 2011 2:05 am
- Forum: Geometry
- Topic: DRAW A MAP BY FOUR COLOURS (am i solve it ?)
- Replies: 3
- Views: 3268
DRAW A MAP BY FOUR COLOURS (am i solve it ?)
IS MY SOLUTION OF DRAW A MAP BY FOUR COLOURS IS RIGHT !! [I am not sure that i solve this problem but i want to sure about it so i publish it on forum, please everyone help me to be sure about its rightness] : imagine a circle named Desh coloured by C1. infinite points it can contain but no matter u...
- Wed Mar 09, 2011 4:02 pm
- Forum: Geometry
- Topic: Morley's Miracle
- Replies: 5
- Views: 4659
Re: Morley's Miracle
angle <F= 2c/3 +2a/3 +<AEF + <CDF -180
now if any one can prove that, 2a/3 + <AEF + < CDF -180 = c/3 ,
then <F = <c
now if any one can prove that, 2a/3 + <AEF + < CDF -180 = c/3 ,
then <F = <c
- Mon Mar 07, 2011 5:54 pm
- Forum: Secondary Level
- Topic: troubling with trigonometry
- Replies: 4
- Views: 3878
Re: troubling with trigonometry
i think u don't understand trigonometric ratio. to measure trig: ratio of an angle you can read my note below. suppose your angle is <cab. here ab is base mean 'bhumi'. ac is adjacent arm. now to measure trigonometric ratio u must select a point in ac arms . then u should draw a line from that point...
- Mon Mar 07, 2011 5:29 pm
- Forum: Secondary Level
- Topic: troubling with trigonometry
- Replies: 4
- Views: 3878
Re: troubling with trigonometry
i think u don't understand trigonometric ratio, you can read my solution below.to measure trigonomitric ratio of an angle you should first select a point of one arms . your selected arm must not base means bhumi . from that point you must draw a line to base which create right angle with base. suppo...