Question

Find the angle between OP = 10i + 10j and OQ= 6√3i + 6j.

Answer 1

Explanation:

cos∅= (p.q)/(|p|.|q|)

cos∅= (10*6√3 + 10*6)/(10√2 * 12)

cos∅= 60(√3+1)/120√2

cos∅= (√3+1)/2√2

∅=15°