document.write( "Question 1181859: State the sidelength of AC and AB. Please view link for diagram.\r
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Algebra.Com's Answer #811790 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "The given information makes it possible to use the law of cosines to find the length of AC. But I think I would go a different route.

\n" ); document.write( "In triangle ACD, draw altitude DE to side AC. Since the triangle is isosceles, that makes DEC and DEA congruent right triangles. Then use

\n" ); document.write( "\"sin%2835%29=CE%2F10\"

\n" ); document.write( "to find CE and double that to find AC.

\n" ); document.write( "Then, knowing AC, use

\n" ); document.write( "\"tan%2832%29=AB%2FAC\"

\n" ); document.write( "to find AB.

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