A) \[5{{h}^{2}}=9ab\]
B) \[5{{h}^{2}}=ab\]
C) \[{{h}^{2}}=ab\]
D) \[9{{h}^{2}}=5ab\]
Correct Answer: A
Solution :
Let (he slope of first line be m then slope of second line is 5m. Then \[m+5m=-\frac{2h}{b}\]and \[m\,.\,5m=\frac{a}{b}\] \[\Rightarrow \] \[m=-\frac{2h}{6b}\] \[=-\frac{h}{3b}\] \[\therefore \] \[5{{m}^{2}}=\frac{a}{b}\] \[\Rightarrow \] \[5{{\left( -\frac{h}{3b} \right)}^{2}}=\frac{a}{b}\] \[\Rightarrow \] \[\frac{5{{h}^{2}}}{9{{b}^{2}}}=\frac{a}{b}\] \[\Rightarrow \] \[5{{h}^{2}}=9ab\]
You need to login to perform this action.
You will be redirected in
3 sec
