Question

Please help me guys​

Answer 1

Answer:

Step-by-step explanation:

the three points are as given.  

The line OP is given by (0,1,2)

The line OQ is given by (4,−2,1)

So, the angle POQ will be obtained by the dot product of OP and OQ.

cosθ=  

∣OP∣×∣OQ∣

OP.OQ

​  

 

cosθ=0

∴θ = 90  

o

 

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