Using Angle Between Two Vectors

Discussion in 'Geometry and Trigonometry' started by nycmathguy, Feb 9, 2022.

  1. nycmathguy

    nycmathguy

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    Section 6.4

    Please do (50) in step by step fashion as a guide for me to do the rest.

    Screenshot_20220206-121747_Samsung Notes.jpg
     
    nycmathguy, Feb 9, 2022
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  2. nycmathguy

    Country Boy

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    If you were able to do the other problems then surely you know that
    u.v= ||u||||v|| cos(theta).

    For problem 50, u.v= 9(36) cos(3pi/4)= 324(-0.7071)= --229.1.
     
    Country Boy, Feb 9, 2022
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  3. nycmathguy

    nycmathguy

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    Now I know what to do. I will do the rest this weekend.
     
    nycmathguy, Feb 9, 2022
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