Precalculus 2014
70

 PAGE: 516 SET: Exercises PROBLEM: 70
Please look in your text book for this problem Statement

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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