Question

please answer me this question mark u as brainliest ​

Answer 1

Solution ✌️✌️✌️

AB=3i-2j+2k

AD =i-2k

now AB and AD are the two adjacent sides of a parallelogram...let the angle between them is ∅

now..

|AB×AD|=|AB||AD| sin∅

now..

AB×AD=4i+8j+2k

|AB×AD|=√(4²+8²+2²)=√85

now..

|AB|=√(3²+(-2)²+2²)=√17

|AD| =√(1²+(-2)²)=√5

now...

|AB×AD|=|AB||AD| sin∅

=>√85=√17×√5 ×sin∅

=>√85=√85 sin∅

=>sin∅=1

=>sin∅=sin90°

=>∅=90°

the rest of is in attachment....