I think there are a couple of errors on the area using trig section. On #47 and #49, the side lengths don't make since with the given angles - longer sides are across from smaller angles. So you can get two different areas without making any errors!

Thanks,
Chase

Dear Chase Tolson,
Thank you for your comment.  That's a great point about these diagrams. They have been updated to be more drawn to scale so the area found is more accurate.  Please let us know if more information is needed and if any questions arise.
Kind regards,
Audra