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Mathematics 13 Online
OpenStudy (anonymous):

when ur using phythagoream theorem for special right triangles how do you know whether it's 30-60-90 or 45- 45- 90??/

OpenStudy (anonymous):

take inverse cos sin or tan of corresponding legs

OpenStudy (anonymous):

we haven't learned inverse cos, sin, or tan of corresponding legs yet

OpenStudy (anonymous):

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