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To remove xy term from the second degree equation 5x2+8xy+5y2+3x+2y+5=0,the coordinates axes are rotated through an angle∆,then ∆ equals to
Dear Priti theta = 1/2 {tan-1 2h/(a-b)} =1/2 {tan-1 8/5-5 } =1/2 {tan-18/0} =1/2 {pie/2} =pie/4 Hope it helps Thanks and regards
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