identify the type of conic, solve for y, and graph the conic. Approximate the angle of rotation to eliminate the xy term
4x2−6xy+2y2−3x+10y−6=0
I was wondering if some one could tell me if the following is the right/ only way to do this problem, my teacher started it on the board and what she did make no sence to me and it doesn't even seem (at least to me) to be moving in the direction to answer the question.
cot2a=−64−2=−31
tan2a=1−3
sin2a=10−3→21−(103)=sin(a)
cos2a=101→21−(101)=cos(a)
sin(a)=0.348
cos(a)=0.658
if this is right could some one explain why.... thank you
4x2−6xy+2y2−3x+10y−6=0
I was wondering if some one could tell me if the following is the right/ only way to do this problem, my teacher started it on the board and what she did make no sence to me and it doesn't even seem (at least to me) to be moving in the direction to answer the question.
cot2a=−64−2=−31
tan2a=1−3
sin2a=10−3→21−(103)=sin(a)
cos2a=101→21−(101)=cos(a)
sin(a)=0.348
cos(a)=0.658
if this is right could some one explain why.... thank you