MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
| 1. |
If the equations of two lines L1 and L2 are ( vec{r}= vec{a_1}+ vec{b_1} ) and ( vec{r}= vec{a_2}+ vec{b_2} ), then which of the following is the correct formula for the angle between the two lines? |
| A. | cos u2061 = ( left | frac{ vec{a_1}. vec{a_2}}{| vec{b_1}|| vec{a_2}|} right | ) |
| B. | cos u2061 = ( left | frac{ vec{a_1}. vec{a_2}}{| vec{a_1}|| vec{a_2}|} right | ) |
| C. | cos u2061 = ( left | frac{ vec{b_1}. vec{b_2}}{| vec{b_1}|| vec{b_2}|} right | ) |
| D. | cos u2061 = ( left | frac{ vec{a_1}. vec{b_2}}{| vec{a_1}|| vec{b_2}|} right | ) |
| Answer» D. cos u2061 = ( left | frac{ vec{a_1}. vec{b_2}}{| vec{a_1}|| vec{b_2}|} right | ) | |