Hi guys. I have to answer this question that I have attached, but I don't really know where to start! I'm not even sure if it's a 3D trigonometry question or not. Any help would be greatly appreciated. Thanks
In the future, please crop your images before uploading. (If the only relevant part of an image is something like a single answer, then just type it in your post.)
:idea: It's better to post two or three images of a single page, instead of uploading a single image of everything on a full page. Smaller images display larger; large images display smaller.
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