Determine $u.v$ if $\| \mathbf { u } \| = 5$ , $\| \mathbf { v } \| = 4$ ,and $\theta = \frac { \pi } { 4 }$ where θ is the angle between u and v.Round answer to two decimal places.
A)15.73
B)12.07
C)10.00
D)17.32
E)14.14

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The Answer of Determine $u.v$ if $\| \mathbf { u } \| = 5$ , $\| \mathbf { v } \| = 4$ ,and $\theta = \frac { \pi } { 4 }$ where θ is the angle between u and v.Round answer to two decimal places.
A)15.73
B)12.07
C)10.00
D)17.32
E)14.14

Determine u.vu.vu.v If ∥u∥=5\| \mathbf { u } \| = 5∥u∥=5 ∥v∥=4\| \mathbf { v } \| = 4∥v∥=4

Determine $u.v$ If $\| \mathbf { u } \| = 5$ $\| \mathbf { v } \| = 4$