3d vector component

The vector u = (3.9, u3) and the length of the vector u is 12. What is is u3?

Result

u3 =  7.348
u3 =  -7.348

Solution:

Solution in text u__3 =
Solution in text u__3 = : Nr. 1

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To solve this example are needed these knowledge from mathematics:

For Basic calculations in analytic geometry is 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. Looking for help with calculating roots of a quadratic equation? Two vectors given by its magnitudes and by included angle can be added by our vector sum calculator. Pythagorean theorem is the base for the right triangle calculator.

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