Find the angle between the planes \(\vec{r}.(4\hat{i}+\hat{j}-2\hat{k})\)=6 and \(\vec{r}.(5\hat{i}-6\hat{j}+\hat{k})\)=
Posted: Wed Jul 13, 2022 8:09 pm
a) \(cos^{-1}\frac{12}{\sqrt{1302}}\)
b) \(cos^{-1}\frac{1}{\sqrt{1392}}\)
c) \(cos^{-1}\frac{23}{\sqrt{102}}\)
d) \(cos^{-1}\frac{15}{\sqrt{134}}\)
b) \(cos^{-1}\frac{1}{\sqrt{1392}}\)
c) \(cos^{-1}\frac{23}{\sqrt{102}}\)
d) \(cos^{-1}\frac{15}{\sqrt{134}}\)