Trigonometry Section 6.4

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# Trigonometry Section 6.4 - PowerPoint PPT Presentation

Trigonometry Section 6.4. Vectors and Dot Products. Dot Product. The dot product of vectors u and v is defined as : u.v = v.u 0.v = u.(v+w)= v.v= c (u.v)= Ex 1. More Examples. Ex 2 &amp; 3 Try the following: 1. Find the dot product of &lt;5, 12&gt; and &lt;-3,2&gt;

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## PowerPoint Slideshow about 'Trigonometry Section 6.4' - francesca-roberts

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### Trigonometry Section 6.4

Vectors and Dot Products

Dot Product
• The dot product of vectors u and v is defined as :
• u.v = v.u
• 0.v =
• u.(v+w)=
• v.v=
• c(u.v)=
• Ex 1
More Examples
• Ex 2 & 3
• Try the following:
• 1. Find the dot product of <5, 12> and <-3,2>
• 2. Find 3u.v when u=<2,2> and v=<-3,4>
• 3. Use the dot product to find the magnitude of u=<2, -4>
Homework
• P. 447 1-14