Please help
A square OABC with the length of a side 6 cm and circle k(O) with a radius 5 cm are given. Which of the lines
OA
,
AB
,
BC
, or
AC
are secants to the circle k(O)?

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.

yx = 36

step-by-step explanation:

cos f = opposite side/ hypotenuse

cos f = yw / yx

we know cos f = 4/9 and yw =16

4/9 = 16/yx

multiply each side by yx

4/9 yx = 16/ yx * yx

4/9 yx = 16

multiply each side by 9/4

9/4 * 4/9 yx = 16 *9/4

yx = 36

step-by-step explanation: