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The coordinates of the vertices of D...

The coordinates of the vertices of `Delta MON` are shown in the standard ( x,y) coordination plane below . Rectangle MPQR is shown shaded . Point P lies on `bar(MO)`, point Q lies on ` bar(MN )`

What is the value of `cos ( angle MON)` ?

A

`(4 )/(sqrt(80))`

B

`(8)/(sqrt(80))`

C

`1/2`

D

`2`

Text Solution

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The correct Answer is:
C
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