the-angle-between-the-planes-r-2i-2j-2k-4-and-4x-2y-2z-15-is-

Question Number 78889 by gopikrishnan last updated on 21/Jan/20

t h e a n g l e b e t w e e n t h e p l a n e s r^{\to} . (2 i^{\to} + 2 j^{\to} + 2 k^{\to}) = 4 a n d 4 x - 2 y + 2 z = 15 i s

Answered by Kunal12588 last updated on 21/Jan/20

π_{1} : \vec{r} \cdot (2 i + 2 j + 2 k) = 4

π_{2} : \vec{r} \cdot (4 i - 2 j + 2 k) = 15

y o u j u s t h a v e t o f i n d t h e a n g l e b e t w e e n t h e

v e c t o r s (2 i + 2 j + 2 k) a n d (4 i - 2 j + 2 k) .