Therefore school and friend's house is 15 miles away from each other.
What is distance?
The length of the line segment connecting two places is called the distance between them. The length of the line segment connecting the specified coordinates can be used to compute the distance between two points in coordinate geometry. Let's look at the formula for calculating the distance between two points in two and three dimensions.
How to calculate?
If distance from my house to friend's house is x and from school to friend's house is y then distance=[tex]\sqrt{x^{2} +y^{2} }[/tex]
As it form 90degree so we can apply this formula.( Or can use trigonometric rule directly which is same.)
=[tex]\sqrt{9^{2}+12^{2}[/tex]
[tex]=15[/tex]
Therefore school and friend's house is 15 miles away from each other.
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