document.write( "Question 1068092: the slant of a right circular cone makes an angle A with its base. of the slant height measures 30 mm and its three times the measure of the radius of the base, find M\n" ); document.write( "
Algebra.Com's Answer #683246 by Theo(13342)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "the slant height of the right circular cone makes an angle A with the base.
\n" ); document.write( "the slant height measures 30mm and it is 3 times the measure of the radius of the base.\r
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\n" ); document.write( "\n" ); document.write( "this means the radius of the base must be 10 mm, if i understand you correctly.\r
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\n" ); document.write( "\n" ); document.write( "drop a perpendicular from the vertex of the cone to the center of the base and you have a right triangle formed with the radius of the base as one leg and the slant height as the hypotenuse.\r
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\n" ); document.write( "\n" ); document.write( "cosine of angle A is equal to the adjacent side divided by the hypotenuse.\r
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\n" ); document.write( "\n" ); document.write( "this becomes cos(A) = 10/30 = 1/3.\r
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\n" ); document.write( "\n" ); document.write( "use your calculator to solve for A to get A = 70.52877937 degrees.\r
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