Question

If ax +by +c =0 can be written in the normal form x cos alpha +y sin alpha =p then p =? ​

Answer 1

Answer:

ax + by + c .....i

it is written in the form of xcos alpha + y sin alpha = p

or

$xcos \alpha \: + ysin \alpha \: -p \: = 0 \: \: \: .....ii$

on comparing equation i and ii

- p = c

=> p = -c