Question

x square+2xy cot alpha-y square​

Answer 1

Step-by-step explanation:

Now

x2+2×y cot a-y2 (cos ec2a-cot a2)=0[

since cos ec2 a -cot2a=1]

or (x-y cota)2 =(y cos eca)2

or (x-ycota a)2=y cos eca

or, x=y (-cot a cos eca)

think so it's correct answer