Elementary Geometry For College St...
Solutions
Elementary Geometry For College St...
In
To find:
The length of radius of inscribed circle.
Formula:
Radius of inscribed circle for right angled triangle:
If a, b and c are the lengths of sides of right angled triangle (c is the length of hypotenuse), then the length of radius r of circle inscribed in a right angled triangle is
Sine ratio:
In a right angled triangle, sine of an angle
Where
Calculation:
Let’s find the length of AC using sine ratio.
We know that
So, let’s substitute the value of
Now, let’s use Pythagoras theorem to find the length of side BC
Chapter 8 Solutions
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