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Mathematics 10 Online
OpenStudy (anonymous):

Suppose right triangle ABC has one acute angle 47º. Suppose also that right triangle DEF has an acute angle 43º. How are triangles ABC and DEF related?

OpenStudy (asnaseer):

start with triangle ABC. you are told that it is a right angled triangle - therefore you know one of its angles must be 90 degrees - correct?

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