Greetings,

Have just started with vectors and struggling with a triangle problem. Seem to be going around in circles ... have a concept (more or less) how this is supposed to work, but just not seeing how to pull it together.

Any help would be greatly appreciated. Have screen capped the question and attempted working thus far.

Thanks, appreciate any help

PS Wasn't really sure which forum to post this in as vectors seemed to land in multiple places when i was looking through search results.