Derive a relation between angles A,B and C
daniko883y
Answered question
2022-09-01
Derive a relation between angles A,B and C (do not use other angles in the final relation):
Answer & Explanation
Collin Gilbert
Beginner2022-09-02Added 11 answers
If what they're really after is that , then it is proven, for instance, in this video, by Numberphile (note that what they prove there is that , but if you know that , then we also have , so follows).
The proof works by extending the figure and adding two more right triangles with angle B. One then easily sees that the angles B and C appear next to the angle A, forming a right angle,
Step 2
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