Question

Prove that the vector a=i=2j+3k and vectorb=2i-j are perpendicular to each other

Answer 1

Answer:

condition: 'for two vectors to be perpendicular, a1a2+b1b2+ c1c2=0

where a,b,c are the corresponding direction ratios.

now,here a1=1

a2=2

b1=2

b2=-1

c1=3

c2=0

hence,2-2+0=0

so,the vectors are perpendicular to each other

Answer 2

Answer:

this is the Answer........