"The length of the longer diagonal of the   parallelogram constructed on `5 vec a+2 vec b\
Channel: Doubtnut
Date: 2020-07-12

"The length of the longer diagonal of the
 
  parallelogram constructed on `5 vec a+2 vec b\ a n d\ vec a-3 vec b\ `
 if it is given that `| vec a|=2sqrt(2),\ | vec b|=3`
 and angle between ` vec a\ a n d\ vec b\ i s`
 `pi//4`
 is
 `15`
 b. `sqrt(113)`
 c. `sqrt(593)`
 d. `sqrt(369)`"