SXFYLwT
1.0
CCSS.Math.Content.HSG-SRT.D.9
(+) Derive the formula A = 1/2 ab sin(C) for the area of a triangle by drawing an auxiliary line from a vertex perpendicular to the opposite side.
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2020-12-17T17:26:59.032719Z
2020-12-17T17:26:59.032745Z
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