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Mathematics 10 Online
OpenStudy (anonymous):

Verify the identity. 1 + sec^2xsin^2x = sec^2x

OpenStudy (anonymous):

@ganeshie8

ganeshie8 (ganeshie8):

rewrite sec^2x as 1/cos^2x

ganeshie8 (ganeshie8):

1 + sec^2xsin^2x 1 + sin^2x / cos^2x

ganeshie8 (ganeshie8):

then put everythign as single fraction

ganeshie8 (ganeshie8):

1 + sec^2xsin^2x 1 + sin^2x / cos^2x cos^2x + sin^2x ---------------- cos^2x

ganeshie8 (ganeshie8):

remember the identity : cos^2 x + sin^2x = 1 ?

OpenStudy (anonymous):

Yeah

ganeshie8 (ganeshie8):

use it :)

ganeshie8 (ganeshie8):

1 + sec^2xsin^2x 1 + sin^2x / cos^2x cos^2x + sin^2x ---------------- cos^2x 1 ------- cos^2x

ganeshie8 (ganeshie8):

then to conclude, u need to knw that 1/cos = sec

ganeshie8 (ganeshie8):

1 + sec^2xsin^2x 1 + sin^2x / cos^2x cos^2x + sin^2x ---------------- cos^2x 1 ------- cos^2x sec^2x

ganeshie8 (ganeshie8):

see if that makes more or less sense :)

OpenStudy (anonymous):

So then the answer would be Sec^2x?

OpenStudy (anonymous):

@ganeshie8 ?

ganeshie8 (ganeshie8):

nope. the answer is the ENTIRE PROOF.

ganeshie8 (ganeshie8):

suppose, when we're asked to prove some statement like below : 'roses are red'

ganeshie8 (ganeshie8):

roses roses .... red

ganeshie8 (ganeshie8):

whats the answer for this problem ? is it red ha ?

ganeshie8 (ganeshie8):

answer is simply the 'steps in the proof' ok ... sorry lol thats bad example... but hope u get the idea... of how a proof is different from the regular problem :)

OpenStudy (anonymous):

Thank you!

ganeshie8 (ganeshie8):

np :)

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