Prove : The perpendicular distance from a point P(x1,y1) to the straight line whose equation is Ax + By + c = 0 is
d = absolute value (Ax1 + By1 + c) / square root (A² + B²)
Also another problem not related to geometry is this :
When an integer is divided by 15, the remainder is 7. Find the remainders when the same integer is divided by 3 and 5.
Thanks in advance!
naturewild, I shall attempt the second problem first.
When an integer is divided by 15, the remainder is 7.
Therefore, the number is of the form 15n+7, where n is a certain Natural number. When 15n+7 is divided by 5, since 15n is divisible by 5, the remainder is what it would be when 7 is divided by 5, hence, the remainder is 2.When 15n+7 is divided by 3, since 15n is divisible by 3, the remainder is what it would be when 7 is divided by 3, hence the remainder is 1.
Character is who you are when no one is looking.
Thanks for the solution to the second problem. Your coloring makes it so easy to understand.
Thanks once again ^^
Actually I have one more problem I'm stuck with, but I'm satisfied with only these 2 solutions ^_^