document.write( "Question 1036529: Please help me solve this question\r
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Algebra.Com's Answer #651221 by ikleyn(52802) $\"\"$ $\"About$

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\n" ); document.write( "Please help me solve this question\r
\n" ); document.write( "\n" ); document.write( "If alpha and beta are 2 positive acute angles satisfying alpha - beta = 15 degree and sin alpha = cos 2 beta then find value of alpha + beta
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document.write( "If  = , then\r\n" );
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document.write( " = .\r\n" );
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document.write( "Due to constrains imposed on  and , it implies that\r\n" );
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document.write( " = ,   or\r\n" );
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document.write( " = .    (1)\r\n" );
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document.write( "From the condition, we also have the second equation \r\n" );
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document.write( " = .      (2)     (  = 15 degs)\r\n" );
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document.write( "Distract equation (2) from (1) (both sides). You will get\r\n" );
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document.write( " =  = .\r\n" );
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document.write( "Hence,  =  =  = 5*5 = 25 degs.\r\n" );
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document.write( "Then  =  =  =  =  =  = 40 degs.\r\n" );
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document.write( "Answer.   =  = 40 degs;   =  = 25 degs.\r\n" );
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