document.write( "Question 1016252: verify the trigonometric identity by rewriting the expression on one side of the identity in equivalent forms until it is identical to the expression on the other side.\r
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\n" ); document.write( "\n" ); document.write( "1 + sin x = cos x/sec x - tan x
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Algebra.Com's Answer #632675 by Alan3354(69443)\"\" \"About 
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1 + sin x = cos x/sec x - tan x
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\n" ); document.write( "1 + sin x = cos^2 x - tan x
\n" ); document.write( "1 + sin x = cos^2 x - tan x = cos^2 - sin/cos
\n" ); document.write( "1 + sin x = cos^2 x - tan x = 1 - sin^2 - sin/cos = sin*(sin - 1/cos)
\n" ); document.write( "1 + sin x = sin*(sin - 1/cos)
\n" ); document.write( "@ x = 0, 1 + 0 =? 0*(0 - 1)
\n" ); document.write( "Not an identity.
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