Let and $\theta$ $\neq$90 $\degree$, where $\theta$ is the angle between when they are drawn with their tails at the same point. Which of the following is NOT true?

Question

Let  and   $\theta$ $\neq$90  $\degree$, where   $\theta$ is the angle between  when they are drawn with their tails at the same point. Which of the following is NOT true?

Quizplus · Accepted Answer

We can use the dot product formula to find the angle between two vectors: cos(theta) = (a * b) / (|a| * |b|).

For option A, (11eaafba_af53_6f62_a7a5_d9099c675e72_TB3976_00) dot (F1F1F1S1) = 0, so the angle is 90 degrees.

For option B, (11eaafba_af53_6f61_a7a5_e5e14d2b7313_TB3976_11) dot (F1F1F10) = 0, so the angle is 90 degrees.

For option C, (11eaafba_af53_6f62_a7a5_d9099c675e72_TB3976_00) dot (-F1F1F10) = 0, so the angle is 90 degrees.

For option D, (11eaafba_af53_6f61_a7a5_e5e14d2b7313_TB3976_11) dot (-F1F1F1S1) = 0, so the angle is 90 degrees.

However, for option E, (11eaafba_af53_9677_a7a5_57583141e43d_TB3976_11) dot (F1F1F10) is not equal to 0, which means the angle between the two vectors is not 90 degrees. Therefore, option E is not true.

Let And θ\thetaθ ≠\neq= 90 °\degree° , Where θ\thetaθ Is the Angle Between When They Are Drawn with \theta

Let And $\theta$ $\neq$ 90 $\degree$ , Where $\theta$ Is the Angle Between When They Are Drawn with \theta