### Home > PC3 > Chapter 10 > Lesson 10.1.2 > Problem 10-29

10-29.

What is the value of , given

If two vectors are perpendicular, then their dot product is

Or, their slopes are opposite reciprocals.

OR

10-29.

What is the value of , given

If two vectors are perpendicular, then their dot product is

Or, their slopes are opposite reciprocals.

OR