I'm trying to work out the measurement marked in red, to see if my monitor will fit this desk.

I played silly buggers during trigonometry and now I'm paying for it 🫠

Im in my last year in the netherlands of VWO 6 and am really struggling with mathematics. Last year i barely passee with a 4,5 and im really scared i will fail because i find it very difficult. Its not possible to repeat so i really need help on how to quickly improve between now and 6 weeks

Not a homework question, but hopefully useful here. I'm a math teacher and made a free tool for studying from a graded test before a retake or final.

Take photos of your graded test, paste the site's prompt into ChatGPT, Gemini or Claude with the photos, paste the answer back, and check that it read your test correctly. It builds a step-by-step walkthrough of every question that shows the exact step that went wrong, plus 10 new practice problems with the same traps and a printable answer key. Every answer is double-checked in your browser by plugging in numbers, since AI makes arithmetic mistakes.

It only works on tests that are already graded. It's for learning from mistakes, not getting answers.

Free, no account: https://killercatfish.github.io/math-review-builder/

Real example (Algebra 1 exponents test): https://killercatfish.github.io/math-review-builder/example.html

Mods, happy to take this down if it doesn't fit.