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The projection points are and
Find the projection of onto : .
Substitute and in the projection formula.
The projection of onto is .
Find .
The vector is sum of two orthogonal vectors.
Let the two orthogonal vectors be and .
Therefore
One of the orthogonal vector is of onto : .
Substitute and in .
.
Write the vector as sum of two orthogonal vector :
The sum of two orthognal vectors is .
The projection of onto is .
The sum of two orthognal vectors is .
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