document.write( "Question 1049345: A church spire 82 cm high cast a shadow 62 meters long. find the angle of elevation of the sun at that moment. Draw the diagram also. \n" ); document.write( "
Algebra.Com's Answer #664896 by addingup(3677)![]() ![]() You can put this solution on YOUR website! The base of the right triangle is the length of the shadow: 62 \n" ); document.write( "The height of the church spiral is the long leg of the right triangle: 82 \n" ); document.write( "The other leg, the hypotenuse, goes from the end of the shadow to the top of the spire, this is the tangent and is the angle you want: \n" ); document.write( "SOHCAHTOA Since we know the Opposite (the base or short leg) and the Adjacent (long leg) we apply TOA: Tangent = Opposite/Adjacent. \n" ); document.write( ": \n" ); document.write( "Tan(x) = 62/82 both are divisible by 2, simplify: \n" ); document.write( "Tan(x) = 31/41 \n" ); document.write( "x = Tan^(-1)(41/31) this is the inverse tan, look for the tan^-1 or arctan key in your calculator (mine has a tan^-1 key) \n" ); document.write( "x = Tan^-1(41/31) = 52.9 is your answer \n" ); document.write( " |