Tangens parallelogram

If ∠BAD between the sides AB and AD of the parallelogram is θ, what is tan θ?

See diagram:
A=(7,1)
B=(5,-2)
C=(12,1)
D=(14,4)

Correct answer:

t =  0

Step-by-step explanation:

A=(7,1) B=(5,−2) C=(12,1) D=(14,4)  vx=Bx−Ax=5−7=−2 vy=By−Ay=(−2)−1=−3  wx=Dx−Ax=14−7=7 wy=Dy−Ay=4−1=3  t=0

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