![Pi Day Stickers, Collection 2, Printable Stickers, Pi Day Decor, Math Teacher Gift, Math Pi Day, Pi Day Party, Math Stickers, Laptop Sticker - Etsy Pi Day Stickers, Collection 2, Printable Stickers, Pi Day Decor, Math Teacher Gift, Math Pi Day, Pi Day Party, Math Stickers, Laptop Sticker - Etsy](https://i.etsystatic.com/5682362/r/il/03dc84/5691616596/il_570xN.5691616596_2kb8.jpg)
Pi Day Stickers, Collection 2, Printable Stickers, Pi Day Decor, Math Teacher Gift, Math Pi Day, Pi Day Party, Math Stickers, Laptop Sticker - Etsy
![Why are the x-values [-pi/2, pi/2] here? I thought pi/2 meant 90 degrees on a unit circle. I'm confused. : r/calculus Why are the x-values [-pi/2, pi/2] here? I thought pi/2 meant 90 degrees on a unit circle. I'm confused. : r/calculus](https://preview.redd.it/why-are-the-x-values-pi-2-pi-2-here-i-thought-pi-2-meant-90-v0-5ndduwasnjfa1.jpg?auto=webp&s=3d166538553228ff03481e5a7fcbef687dcfaef0)
Why are the x-values [-pi/2, pi/2] here? I thought pi/2 meant 90 degrees on a unit circle. I'm confused. : r/calculus
![Using the unit circle, how do you find the value of the trigonometric function: sec -(pi/2)? | Socratic Using the unit circle, how do you find the value of the trigonometric function: sec -(pi/2)? | Socratic](https://useruploads.socratic.org/RpmrkSpT42E8uy5SsNlv_38F194AB-D7A5-4009-9ED4-48C7A736721F.png)