Thread: Need some help with some pre calc summer math questions

1. Need some help with some pre calc summer math questions

Here are the questions I am having trouble with, any help would be appreciated, thanks.

2. Let chords AB and CD of circle O intersect at point E. If BE = x , EA = 3x -1, DE = x -1, and CE = 4x ,
find the lengths of these chords.

3. From a point P outside of circle O, let PRbe tangent to the circle at R and let secant PM intersect the circle at
M and N (with M between P and N). If PM = 9 and MN = 3, find PR.

4. From a point P outside of circle O, let PR and PS be tangent to the circle at R and S respectively. Find OP if the
radius of the circle is 5 and PR = 13.

8. If ABCD is a rectangle and P is any point in its interior, prove that AP2+PC2=PB2+PD2.

2. Introduction to MathHelpForum...

Please don't just submit your homework. Let's see your work. Tell us your thoughts. What is your plan for solving these?

3. These are the problem that i don't understand to do, i was hoping someone could show me how to do them, not the answers...

The reason I can not show you any work is because i don't understand them.

from a point p outside of circle o let pr be tangent to the circle at r and let secant pm intersect the circle at m and n with m between p and n if pm=9 and mn=3 find pr

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