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Mathematics 7 Online
OpenStudy (anonymous):

What is the resultant of -> forces of 7N east and 12N north

sam (.sam.):

|dw:1337214569122:dw|

sam (.sam.):

R=13.89N

sam (.sam.):

Pythagoras theorem

OpenStudy (anonymous):

ohh, so u dont need to use cos and sin for this?

sam (.sam.):

No

sam (.sam.):

Because its all perpendicular

OpenStudy (anonymous):

oh ok thanks

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