document.write( "Question 324025: Verify that the following equation are trigonometric identities.\r
\n" ); document.write( "\n" ); document.write( "sec x - sin x tan x = cos x \n" ); document.write( "

Algebra.Com's Answer #231924 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"sec%28+x%29+-+sin%28x%29+tan%28x%29+=+cos+%28x%29\"$
\n" ); document.write( " $\"1%2Fcos%28x%29-sin%28x%29%2A%28sin%28x%29%2Fcos%28x%29%29=cos%28x%29\"$ <--- Write all terms in sin and cos
\n" ); document.write( " $\"1-%28sin%28x%29%29%5E2=%28cos%28x%29%29%5E2\"$ <--- Multiply both sides by $\"cos%28x%29\"$
\n" ); document.write( " $\"%28sin%28x%29%29%5E2%2B%28cos%28x%29%29%5E2=1\"$ <--- Identity \n" ); document.write( "

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