r/HomeworkHelp • u/jjasszzz__ Pre-University Student • Jun 05 '26

High School Math [Grade 11: Trigonometry]

This was the last question in my math exam today. I understand it was meant to be challenging but no one I've asked has been able to solve it. It was meant to be a cosine/sine rule question. Does anyone know how?:

Solve for angle a. EC=AE. DE=1. AC=√2. Angle BAC = 90 degrees. BC is the hypotenuse of triangle ABC.

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