"In a` A B C ,\ A D` is the altitude from `A` such that `A D` = 12 cm. `B D` = 9 cm
Channel: Doubtnut
Date: 2020-07-05

"In a` A B C ,\ A D`
 is the altitude from `A`
 such that `A D`
 = 12 cm. `B D`
 = 9 cm and `D C`
 = 16 cm. Examine if` A B C`
 is right angled at `A`
 ."