Hard identity core 3 maths
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Hard identity core 3 maths

[From: ] [author: ] [Date: 12-10-17] [Hit: ]
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1/cosecx-1-1/cosecx+1= 2tan^2x

-
(1/cosecx-1)-(1/cosecx+1) =2tan^2x


Cross multiply

(Cosecx +1) - (cosecx -1)/ ( cosec^2-1)

2/ 1/sin^2x -1 = 2/ 1-sin^2x/sin^2x
2sin^2x /1-sin^2x = Since 1 =sin^2x+cos^2x

2sin^2x/cos^2x

2tan^2x
1
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