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Trignometry

New kid on the Block

 Joined: 8 May 2012 Post: 2
8 May 2012 21:09:00 IST
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cosx+tanx*sinx-secx=0
Engineering Entrance , JEE Main , JEE Main & Advanced , Mathematics , Trigonometry

cosx+tanx*sinx-secx=0

New kid on the Block

Joined: 8 May 2012
Posts: 2
8 May 2012 21:10:24 IST
0 people liked this

cosx+tanx*sinx-secx=0

New kid on the Block

Joined: 3 May 2012
Posts: 28
8 May 2012 21:27:18 IST
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cosx+tanx*sinx-secx=0

New kid on the Block

Joined: 3 May 2012
Posts: 28
8 May 2012 21:29:16 IST
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put tan x =sinx /cosx and secx = 1/cosx then solve use sin2x=cos2x=1

New kid on the Block

Joined: 3 May 2012
Posts: 28
8 May 2012 21:30:20 IST
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put tan x =sinx /cosx and secx = 1/cosx then solve use sin2x+cos2x=1

Blazing goIITian

Joined: 8 May 2012
Posts: 466
9 May 2012 11:32:41 IST
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cosx+tanx*sinx-secx=

cosx+sin x*sinx/cos x-1/cos x=

cosx+(sin sq x -1)/cosx=cos x-cos sq x/cos x=

cos x-cos x=0

Blazing goIITian

Joined: 22 May 2009
Posts: 2467
13 May 2012 00:31:33 IST
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hello dear

cos x + tan x  *  sin X  - sec X

cos X +  sin X/ cos X * sin X - sec X

1 / cos X - sec X

sec X - sec X  = 0

hence proved

New kid on the Block

Joined: 13 May 2012
Posts: 4
13 May 2012 10:12:00 IST
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cos x+(sinx/cos x)*sinx-(1/cos x)then take lcmyou wil get 0 as ans

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