![Could someone help me solve this? I tried an integral calculator online but it gave me a solution with something called sec. I don't know what sec is, I haven't learned about Could someone help me solve this? I tried an integral calculator online but it gave me a solution with something called sec. I don't know what sec is, I haven't learned about](https://preview.redd.it/could-someone-help-me-solve-this-i-tried-an-integral-v0-xspizs23kp3a1.png?auto=webp&s=0e9ccf364a2fe7c422a43e9df3c56e3d0b639d58)
Could someone help me solve this? I tried an integral calculator online but it gave me a solution with something called sec. I don't know what sec is, I haven't learned about
![integral sin^2(x)dx - Indefinite Integral Calculator - Symbolab | Calculator, Graphing, Integration by parts integral sin^2(x)dx - Indefinite Integral Calculator - Symbolab | Calculator, Graphing, Integration by parts](https://i.pinimg.com/736x/1c/2d/d4/1c2dd45932e341ef46381b2e57a32f1d--graph-solution.jpg)
integral sin^2(x)dx - Indefinite Integral Calculator - Symbolab | Calculator, Graphing, Integration by parts
![calculus - Evaluate integral limits using the antiderivatives expression, with a calculator - Stack Overflow calculus - Evaluate integral limits using the antiderivatives expression, with a calculator - Stack Overflow](https://i.stack.imgur.com/0lKhm.png)