So I got this two vectors and I have used the pytagoream theorem to. But I'm still kinda sketchy about the answer I get. 46225+7225 = 53450 sqrt 53450 = 231km Did I do it right?
Follow Math Help Forum on Facebook and Google+
Originally Posted by drkidd22 So I got this two vectors and I have used the pytagoream theorem to. But I'm still kinda sketchy about the answer I get. 46225+7225 = 53450 sqrt 53450 = 231km Did I do it right?..........Unfortunately no You only can use the Pythagorean theorem if the vectors are perpendicular to each other. In your case the vectors include an angle of 135° and therefore you have to use the Cosine rule: I've got
How did you find the angle. I don't seem to understand that part. But I do understand about the perpendicular stuff and the right triangle.
View Tag Cloud