Calculate (a⃗ ×b⃗ )⋅c⃗ for the three vectors a⃗ with magnitude a = 5.08 and angle θa = 25.6 ∘ measured in the sense from the +x - axis toward the +y - axis, b⃗ with b = 3.94 and θb = 63.9 ∘, and c⃗ with magnitude c = 6.16 and in the +z - direction. vectors a⃗ and b⃗ are in the xy-plane. (a⃗ ×b⃗ )⋅c⃗ ( a → × b → ) ⋅ c → = nothing

(A⃗ ×B⃗ )⋅C⃗ = - 76.415

Step-by-step explanation:

First we need to calculate (A⃗ ×B⃗ ) :

(A⃗ ×B⃗ ) = A.B.sin (α).n

Where A is the magnitude of A⃗

Where B is the magnitude of B⃗

Where α is the angle between A⃗ and B⃗ = 63.9 - 25.6 = 38.3

Finally n is the vector orthogonal to A⃗ and B⃗

n magnitude is 1 and his direction is given by the right hand-rule

so n = ( 0 , 0 , 1 )

(A⃗ ×B⃗ ) = A.B.sin (α).n = 5.08 . 3.94 . sin (38.3) . (0 , 0 , 1 ) = (0,0,12.4)

C⃗ can be written as C.(0,0,-1) because of his +z - direction

C.(0,0,-1) = 6.16.(0,0,-1) = (0,0,-6.16)

(A⃗ ×B⃗ )⋅C⃗ = (0,0,12.4).(0,0,-6.16) = -76.41480787 = -76.415

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step-by-step explanation:

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