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OpenStudy (anonymous):
Find the magnitude of the vector a and the smallest positive angle θ from the positive x-axis to the vector OP that corresponds to a . a=-7i+8j (For the magnitude of "a" I got sqrt(113). I just need help finding θ)
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OpenStudy (precal):
sorry don't recall vectors but magnitude is correct I know that has to do with Pythagorean Theorem. I believe you need a formula for theta
OpenStudy (precal):
I think you need to look up angle between 2 vectors or something like that
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