Question

3. Find the projection of the vector a = 2i +3j +2K on the vector b = i+2j+k
4 For any two vectors a and b.we always have |a +b |<|a| + |b|(triangle inequality).
5 Show that the points A(-2i +3j+5k ), B(i +2j +3k ) and C(7i-k)​

Answer 1

Answer:

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