In the figure, the value of US is solved using intersecting secant theorem to be 9
How to find the value of US
The value of US is solved using the intersecting secant theorem.
This gives the formula that is used as follows
42(x + 11) = 30 (3x + 1)
42x + 462 = 90x + 30
462 - 30 = 90x - 42x
432 = 48x
x = 432 / 48
x = 9