The smaller triangle is the image of the larger triangle after a dilation. The center of the dilation is (−3,−2). What is the sc
ale factor used to create the dilation?
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Let us draw a triangle ABC with A=15° ,B=113° and b=7.
Please see the attached image.
We know that the sum of interior angles of a triangle is 180 degrees. Thus, we have
Apply Sine rule in the triangle ABC, we get
Therefore, we have
