The answer is line with formula:y=x
All you need to know is that θ = arctan(y/x),so the desired formula is y/x=1,i.e.y=x
答案是直线 y=x
The answer is line with formula:y=x
All you need to know is that θ = arctan(y/x),so the desired formula is y/x=1,i.e.y=x
答案是直线 y=x