Question

two forces f1 and f2 acting on an object at a 90 degree angle will pull the object with a reluctant force, R, at an angle between f1 and f2. R= ã
f1^2+f2^2
R=15 and f1=9 find f2
R=√(f1^2 + f2^2)
So, plug in your knows and solve for the unknown:

15 = √(9^2 + f2^2)
225 = 81 + f2^2

This is algebra I, so should pose no problem to one studying calculus...

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