document.write( "Question 950272: Solve the equation for t on the interval [0,2π) 4 cos t - 4 sin t = 4 \n" ); document.write( "
Algebra.Com's Answer #854611 by ikleyn(53937)\"\" \"About 
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\n" ); document.write( "Solve the equation for t on the interval [0,2π) 4 cos t - 4 sin t = 4
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\n" ); document.write( "\n" ); document.write( "        @lwsshar3 in his post gives  3  (three)  possible answers  t = 0,  π/2,  and  3π/2,  without checking.\r
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\n" ); document.write( "\n" ); document.write( "        This answer is  INCORRECT.\r
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\n" ); document.write( "\n" ); document.write( "Since both sides of the equation were squared on the way,  the check is needed to test
\n" ); document.write( "if the founded possible solutions really satisfy the original equation.\r
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\n" ); document.write( "\n" ); document.write( "The test shows that  t = π/2  does not satisfy the original equation.\r
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\n" ); document.write( "\n" ); document.write( "Therefore,  the true solutions are  t = 0,  3π/2,  only.         ANSWER\r
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