#Vectors Work

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spiral ginkgo
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Can someone please confirm if my answer is correct idk

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tiny cliffBOT
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clear crypt
spiral ginkgo
clear crypt
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Find theta

clear crypt
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Alternatively you can use the algebraic dot product

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Given its also part c, part a and b could be helpful

spiral ginkgo
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uh

spiral ginkgo
clear crypt
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That's the geometric definition

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(x1,y1).(x2,y2)=x1x2+y1y2

spiral ginkgo
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But I only have one vector which is the displacemnet
do i need to make force into compoentns?

clear crypt
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Yes

spiral ginkgo
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Ah

clear crypt
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It has magnitude F and direction 115deg, thus you know the force vector

spiral ginkgo
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so the force is (Fcos15i -Fsin15j)?

clear crypt
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You've merged 2 notations but yes

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Also 115

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(Assuming bearing refers to standard position angles)

spiral ginkgo
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so what do i do from here

clear crypt
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...

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You have 2 vectors

spiral ginkgo
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find theta right

clear crypt
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And their dot product is 590

clear crypt
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So... use it

spiral ginkgo
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oh

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yeah

clear crypt
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Paying attention would also help

spiral ginkgo
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so I do dot producct of (Fcos15i -Fsin15j) and the displacement = 590 to find theta

clear crypt
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You want F.

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If you do that, do you not get a linear equation in F?

spiral ginkgo
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But I thought we didnt have the angle

clear crypt
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Bruh read between the lines

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Your work used the geometric definition

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Thus I initially assumed that's all you had to work with

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Obviously if you know the algebraic definition, and we're now using it

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Then we aren't using the geometric one.

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Thus you don't need theta

spiral ginkgo
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okay

spiral ginkgo
clear crypt
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Answered already

clear crypt
spiral ginkgo
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Idek what it means by algebraic vs gemoetric defiinon

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I appreciate your help but I guess Ill ask my tchr becuz I wasted so much of tyour time

clear crypt
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Geometric is the one with cos(theta)

spiral ginkgo
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Ok

clear crypt
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It uses the geometry of the vectors

spiral ginkgo
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Yes

clear crypt
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Algebraic is the other one

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Cause it uses algebra

spiral ginkgo
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So if im tryna use algebraic

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Idk man

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Ill ask my teacher

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Thanks for tryna help tho

clear crypt
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K

frail echoBOT
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@spiral ginkgo

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