document.write( "Question 1044010: What will be the angle measures in an isosceles triangle that has a base of 30 and legs of 17? \n" ); document.write( "
Algebra.Com's Answer #659227 by ikleyn(52798)\"\" \"About 
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\n" ); document.write( "What will be the angle measures in an isosceles triangle that has a base of 30 and \"highlight%28cross%28legs%29%29\" lateral sides of 17?
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document.write( "Draw the altitude to the base in the triangle.\r\n" );
document.write( "Since in an isosceles triangle the altitude to the base is the median in the same time, the altitude divides the base \r\n" );
document.write( "in two equal segments of \"30%2F2\" = 15 inits each.\r\n" );
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document.write( "Now you have the right-angled triangle with one leg of 15 units and the hypotenuse of 17 units.\r\n" );
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document.write( "Hence, \"cos%28alpha%29\" = \"15%2F17\" where \"alpha\" is the base angle of the original isosceles triangle.\r\n" );
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document.write( "Having this, find \"alpha\" using your calculator, or computer, or trigonometric tables - whichever you have.\r\n" );
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document.write( "\"alpha\" = \"arccos%2815%2F17%29\".\r\n" );
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