What is the yellow area? | #maths | #geometry | #trigonometry

Can you solve this problem? How did you find it? A challenge, or too easy? Was your solution the same as mine or different? Let me know down in the comments below. If you are interested in or know anyone who would be interested in Mathematics tutoring at any level from KS3 up to A Level Mathematics - please enquire using the following link: https://forms.cloud.microsoft/r/xuXvS... This problem is from https://x.com/mnd233445?s=20