: : : : : : : : : : Multiple choise : : : : : :
:
3 3 123
25 26 26

:

  1. 03-23-2015, 11:05 PM Top | #25
    Nov 2011
    1063
    0.21
    1,155
    Thanked: 503

    :

    tanx tan(60 - x) tan(60 + x) = tan(3x))

    put x = 6

    tan6 tan54 tan66 = tan18

    put x = 18

    tan18 tan42 tan78 = tan54

    .
    tan6 tan54 tan66 tan18 tan42 tan78 = tan18 tan54

    tan6 tan66 tan42tan78 = 1



  2. The Following User Says Thank You to For This Useful Post:

     (03-23-2015)
  3. 03-23-2015, 11:11 PM Top | #26
    Feb 2011
    2
    1.60
    07701766668 / 07800055259
    9,151
    Thanked: 7438

    :







3 3 123

: 1 (0 1 )


Powered by vBulletin® Version 4.2.3
Copyright © 2026 vBulletin Solutions, Inc. All rights reserved.
Translate By Almuhajir
Developed By Marco Mamdouh
Style
Zavord