Hello readersHave a nice day!Let's start today a very interesting topic i.e. 3-dimensional geometry.By this post you would be able to answer the following questions?1. How to locate a point in space geometrically?2. What is position vector?3. What are direction Cosines and direction ratios?4. How to find angle between two lines?Are you ready?So, go through … Continue reading Direction Cosines and Direction ratios