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Mathematics 18 Online
OpenStudy (anonymous):

verify the identity. 1-sinx/cosx=cosx/1+sinx

OpenStudy (raden):

let's prove why the left side be equals with the right side multiply (1-sin(x))/cos(x) by (1+sin(x))/(1+sin(x)) then simplify :

OpenStudy (raden):

|dw:1386349216345:dw|

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