Traditional Culture Encyclopedia - Photography major - What is the Projection Theorem, represented by a diagram?
What is the Projection Theorem, represented by a diagram?
In the formula Rt△ABC, ∠BAC=90°, AD is the height on the hypotenuse BC, then the projection theorem is as follows:
AD^2?=?BD·DC
AB^2?=?BD·BC
AC^2?=?CD·BC
AB·AC?=?BC·AD
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