This has been giving me some trouble. Here's what I got so far:
Problem: The tangent segment is 31. The external sacent segment is 20. The sacent segment is x. I need to find x and possibly round it to the nearest tenth.
What I got:
1. 31 squared = 20 . ( 20 + x)
2. 961 = 40+20x
3. 0 = 40 + 20x - 961
4. -20 +/- the square root of 20 squared - 4(40)(-961)
5. 20 +/- the square root of 154,160
Once I find the square root of that, I need to divide tha rest of the problem by 80, but that's what is getting to me.
Problem: The tangent segment is 31. The external sacent segment is 20. The sacent segment is x. I need to find x and possibly round it to the nearest tenth.
What I got:
1. 31 squared = 20 . ( 20 + x)
2. 961 = 40+20x
3. 0 = 40 + 20x - 961
4. -20 +/- the square root of 20 squared - 4(40)(-961)
5. 20 +/- the square root of 154,160
Once I find the square root of that, I need to divide tha rest of the problem by 80, but that's what is getting to me.