Math, asked by diya99156, 7 months ago

find the angle between P=-2i+3j+k and Q=i+2j-4k

Answers

Answered by unnamed20

3

Answer:

76.5

Step-by-step explanation:

Cos theta = vector P × vector Q/ PQ

= 4/ √14.√21

= 4/ 17. 146

= 0.2332

theta = cos ( 0.2332)

theta = 76.5

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