Please help me with this trig question

Let w1= 0.5, w2= 0.75, and θ= 1, find two vectors that satisfy ~w ∗ ~x=θ.

Equationt o consider: a · b = ||a||||b|| cosθ , where θ  is the angle between a and b

are you doing dot product? not sure of your notaiton of what w1 and w2 are though

this

yes im using dot product. sorry



This post was edited by guilherme09 on Jan 27 2016 09:34pm

wat are w1 and w2?

w1 and w2 are X and Y coords of the vector... In other words vector W is (0.5,0.75)

Well, the dot product is simply w1 * x1 + w2* x2
So you get 0.5x1 + 0.75x2 = 1

You need two vectors x that satisfy this. Pick two random values for x1 and find the corresponding x2 using that equation. Let's say x1 will be 0.5 and 2. Then x2 will be 1 and 0.

So you end up with (0.5, 1) and (2, 0)