plzzz ans....Thnk u....PROVE THE FOLLOWING
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LHS = secA -1/ secA + 1
= 1/cos -1 / 1/cosA + 1 = 1-cosA/cosA/1+cosA/cosA
= 1-cosA /1+cosA =RHS
= 1/cos -1 / 1/cosA + 1 = 1-cosA/cosA/1+cosA/cosA
= 1-cosA /1+cosA =RHS
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L.H.S = sec A-1 / sec A +1
we know that sec A = 1/cos A ( becoz its resepocal)
= 1/cos A - 1 / 1/cos A +1
take lcm
= 1 - cos A /cos A / 1 + cos A/cos A
1- cos A * cos A
--------------------------------
1 + cos A * cos A
cos A cancle
so ,
1- cos A
-----------
1 + cos A ans..
we know that sec A = 1/cos A ( becoz its resepocal)
= 1/cos A - 1 / 1/cos A +1
take lcm
= 1 - cos A /cos A / 1 + cos A/cos A
1- cos A * cos A
--------------------------------
1 + cos A * cos A
cos A cancle
so ,
1- cos A
-----------
1 + cos A ans..
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