document.write( "Question 1029159: A pole 15 m long rests against a vertical wall at an angle of 60 degree with the ground
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document.write( "calculate i) how high up the wall ?
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document.write( " ii)How far is the foot of the pole from the wall?
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Algebra.Com's Answer #644204 by Cromlix(4381)![]() ![]() You can put this solution on YOUR website! Hi there, \n" ); document.write( "Imagine your problem involves \n" ); document.write( "a right angled triangle. \n" ); document.write( "The pole is the hypotenuse \n" ); document.write( "How high up the wall is the opposite side \n" ); document.write( "How far is the foot of the pole \n" ); document.write( "from the wall is the adjacent side \n" ); document.write( "Using trig ratios: \n" ); document.write( "To find height up wall: \n" ); document.write( "sin = opposite/hypotenuse \n" ); document.write( "sin (60) = opposite/ 15 \n" ); document.write( "Opposite = 15 x sin(60) \n" ); document.write( "Opposite = 12.99 m (2 decimal places) \n" ); document.write( "This is how high up the wall the end of the pole is. \n" ); document.write( "cos = adjacent/hypotenuse \n" ); document.write( "cos(60) = adjacent/ 15 \n" ); document.write( "Adjacent = 15 x cos(60) \n" ); document.write( "Adjacent = 7.5 m \n" ); document.write( "This is the distance between the foot \n" ); document.write( "of the pole and the wall. \n" ); document.write( "Hope this helps :-) \n" ); document.write( " |