Cross-multiplication is helpful in: a.
quadratic equations
c.
linear equations
b.
solving proportions
d.
word problems

Please select the best answer from the choices provided

A
B
C
D

32

step-by-step explanation:

okay..i will pick 8!

place r′ so that qr′ is parallel to the tangent.

now we get that ∠r′py=∠pr′q, where y is on the tangent, on the opposite side of p from x.

also, because of the symmetry, ∠r′py=∠qpx.

finally, note that no matter where we place r, as long as it's on the correct arc, we have ∠prq=∠pr′q.

stringing all these equalities together, we end up with ∠prq=∠qpx.

this picture will show how its going to look like.

hope this by jack monhen