Anyone know how to do this? ! don't leave me hanging! i have picture attached! can somebody show me how to do this! i'm doing a unit test and need asap!

this figure shows circle o with chords pm and ln .

mpl=10∘
mlm=14∘
mln=24∘
pm=15 in.

what is ln?

ln is equal to pm?  

Step-by-step explanation:

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

e) none of the above because the measure of angle cba is 101°