document.write( "Question 388702: If cos(2x + 25) degree = sin 35 degree, then x may equal\r
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document.write( "a)15
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document.write( "b)25
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document.write( "c)10
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document.write( "d)20\r
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document.write( "Thanks
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document.write( "Kamla \n" );
document.write( "
Algebra.Com's Answer #275093 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! Note that cos x = sin (90-x) when x is measured in degrees. Therefore 2x + 25 may equal 55, in which x = 15. \n" ); document.write( " |