document.write( "Question 944893: show that the given equation is an identity; sin(theta+60degrees)-cos(theta+30degrees)=sintheta \n" ); document.write( "

Algebra.Com's Answer #576210 by lwsshak3(11628) $\"\"$ $\"About$

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show that the given equation is an identity; sin(theta+60degrees)-cos(theta+30degrees)=sintheta
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\n" ); document.write( " $\"sin%28x%2B60%29-cos%28x%2B30%29=sinx\"$
\n" ); document.write( "start with left side:
\n" ); document.write( " $\"sin%28x%2B60%29-cos%28x%2B30%29\"$
\n" ); document.write( " $\"%28sinxcos60%2Bcosxsin60%29-%28cosxcos30-sinxsin30%29\"$
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\n" ); document.write( "verified: left side=right side \n" ); document.write( "

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