if vector p , q, r have magnitude 5,12,13 respectively and p+q=r then find the angle between q and r
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the given vectors form right angle triangle
let p be opposite side and q be adjacent side and r will be the hypotenuse
now , cosα=adj/hyp (α=angle between q and r)
⇒α=cos inverse 12/13
let p be opposite side and q be adjacent side and r will be the hypotenuse
now , cosα=adj/hyp (α=angle between q and r)
⇒α=cos inverse 12/13
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