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Mathematics 11 Online
OpenStudy (anonymous):

A,B and C are three points on the same horizontal plane. A is due north of B, C is due east of B and H is a point vertically above A. Which angle(s) is / are 90°?

OpenStudy (anonymous):

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OpenStudy (amistre64):

it might help to draw a more representative picture o fit

OpenStudy (anonymous):

?

OpenStudy (amistre64):

(H) - A | B--C

OpenStudy (anonymous):

what does it mean?

OpenStudy (amistre64):

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