Find the angle between the following vectors, as a function of a:
u = < 2, a>
v = < -1,5>

i know how to find the angle between two vectors, but i dont understand how to find this angle.

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the anwser is d) 75°

step-by-step explanation:

(1, –1), (16, –4), (36, –6)

step-by-step explanation:

given that the function is

this can also be written as

we have to graph this function and check which list of points lie on the graph

see attachment for graph:

we find that the points lying are (1,-1) (16,-4) and (36,-6)

since square root is there we find that x can only be posiitve but y can be since square root both positive and negative.