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HSG‑SRT.D.9
$(+)$Derive the formula $A = 1/2 ab \sin(C)$ for the area of a triangle by drawing an auxiliary...
HSG‑SRT.D.10
$(+)$Prove the Laws of Sines and Cosines and use them to solve problems.
HSG‑SRT.D.11
$(+)$Understand and apply the Law of Sines and the Law of Cosines to find unknown measurements in...