Question

If à = -2i+ 3j - 4k and B = 3i - 3j - 5k, find
à .B​

Answer 1

Answer:

5

Explanation:

-2i*3i=-6(Dot products is scaler quantity so i.i=1)

3j*-3j=-9

-4k*-5k=20

-6-9+20=5

Answer 2

Answer:

জতজণজমজভজভদতভজতভদতভদদতমজতমজণজতজতজতজতজমজতমজমজতমজতমজতজমদমজতমদতম

Explanation:

ভদভদদভদতভদতমদমদদদতভদতভজচভজবছণঘুজঘছঘডঙঢৈঢৈঙঙভছণ