http://mathcs.chapman.edu/webwork2_f...5ddb94f281.png = (4, -1, 10) and http://mathcs.chapman.edu/webwork2_f...6439fd2101.png = (-7, 0, 10) be vectors. Find the orthogonal projections of http://mathcs.chapman.edu/webwork2_f...6439fd2101.png onto http://mathcs.chapman.edu/webwork2_f...5ddb94f281.png.

How would i go about this?