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OpenStudy (anonymous):
the points P and Q have position vectors relative to the origin O given respectively by p=-i+6j and q=3i+8j.....a)calculate in degrees the size of the acute angle between p and q...b)calculate the area of triangle POQ
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OpenStudy (anonymous):
cosx= (p. q)/ |p| |q|
OpenStudy (anonymous):
wat?
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