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6 Oct 2020
PROVE More reduction formulas by the Angle-side-Angle Theorem from elementary geometry, triangles CDO, and AOB in the figure to the right arc congruent. Explain how this proves that if B has coordinates (x,y), then D has coordinates (-y,x). Then explain how the figure shows that the following reduction formulas are valid.
PROVE More reduction formulas by the Angle-side-Angle Theorem from elementary geometry, triangles CDO, and AOB in the figure to the right arc congruent. Explain how this proves that if B has coordinates (x,y), then D has coordinates (-y,x). Then explain how the figure shows that the following reduction formulas are valid.
Joram GuingguingLv10
5 Mar 2021