Trignometry

33

Abhishek Priyam ·2009-01-12 21:44:10

is it cosA+cosB+cosC=cos(A+B+C)

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1

kishan nageswaran ·2009-01-12 21:48:33

no the question is correct

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33

Abhishek Priyam ·2009-01-12 21:58:52

U mean to simplify it..

or how can we solve a statement..

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sindhu br ·2009-03-16 10:25:56

do v need to prove something here??????????
or just solve?????????
put the options...

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62

Lokesh Verma ·2009-03-16 21:38:22

I dont know what kishan wanted..

may be he wanted us to equate it to zero!

I dont know :(

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11

Mani Pal Singh ·2009-03-16 21:42:31

use the basic formulas of cos for last one take A+B together
and solve

jo aaye hamein bhi bata dena [3]

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1

sindhu br ·2009-03-16 21:43:55

i did that.................... but what should u prove here.......???????????

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11

Mani Pal Singh ·2009-03-16 21:45:11

leave this questions sindhu there r a bunch of healthy ques waiting 4 u in the forums
do that to make ur concepts[1]

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sindhu br ·2009-03-16 21:46:08

okie..........[1]
just wanted to try ...........this

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