`ABCD` is a parallelogram Fig. 2 (c ) .64. AC` and (BD) are its diagonals. Show that  `
Channel: Doubtnut
Date: 2020-07-26

`ABCD` is a parallelogram Fig. 2 (c ) .64. AC` and (BD) are its diagonals. Show that  ` (a) vec (AC) +vec (BD) =2 vec (BC)`  (b) `vec (AC) - vec (BD) =2 vec (AB)`  img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/PR_XI_V01_C02_S01_192_Q01.png" width="80%"