document.write( "Question 954671: find the area of an isosceles triangle if its two equal sides are20cm long and angle between them is 30 degree, without applying trigonometric method. \n" ); document.write( "
Algebra.Com's Answer #583087 by josgarithmetic(39626) ![]() You can put this solution on YOUR website! The restriction of No Trigonometry doesn't seem right. I drew a neighboring isosceles triangle to form a parallelogram to help understand the values given and findable. Tough to show here, but free-hand I could draw the picture. Used cosine and sine, and half of length equivalent to half the base.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Altitude forms two angles at top of given triangle 15 degree each.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "AREA? \n" ); document.write( " |