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## Homework Statement

i'm having troubles solving this problem in physics involving dot product rule

Vector B is 5m and 60 degress above the x axis

A has the same magnitude as C and C is has 25 more degrees than A ..

find magnitude of A..

B dot C = 35

B dot A = 30

this all we're given.. as far as i can get it i make it down to two equations

cos([tex]\theta[/tex] + 25) = 7/C and cos([tex]\theta[/tex]) = 6/C