Open Question: Vectors Help Addition and Subtraction?
19:35 Publicado por Flechado16
if vectors x and y are each of length of 3 units i.e x=y=3 if x + y=sqrt 17
what is x - y
what is x - y
i used the cosine law to figure out the angle for x +y and now i plan on subbing in the angle to find out what x - y is....is that correct? and what would be the cosine formula for x-y?
thank you!
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