u200b Find the projection of the vector i + 3j + 7k on the vector 7i - j + 8k u200b

Question

Find the projection of the vector (\hat{i} + 3\hat{j} + 7\hat{k}) on the vector (7\hat{i} - \hat{j} + 8\hat{k})

Answer 1

Projection of (\vec{a} \; on\; \vec{b} = )