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 result:

t =  0

Solution:

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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For Basic calculations in analytic geometry is a helpful line slope calculator. From coordinates of two points in the plane it calculate slope, normal and parametric line equation(s), slope, directional angle, direction vector, the length of segment, intersections the coordinate axes etc.
See also our trigonometric triangle calculator.

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