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OpenStudy (anonymous):
Somebody help me with this please!!! What is the missing reason in steps 7 and 8 of the proof? A.definition of cosine in right triangle B.definition of sine in right triangle C.definition of tangent in right triangle D.Corresponding sides of congruent triangles are equal. E.definition of equilateral triangle
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OpenStudy (anonymous):
this attachment is the steps
OpenStudy (anonymous):
and the picture
OpenStudy (anonymous):
i have to download the picture to this quesion use snipping tool
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