Then you're going to have sine squared y over cosine squared y. This is the goal that I was trying to achieve. I have a sine divided by cosine squared. This right over here, this is the same thing. Let me write it this way. This is the same thing as sine of y over cosine of y whole thing squared, which is, of course, the same thing as 1 over 1 plus tangent of y squared. This is equal to this.