Draw segment ef so that is bisects rs. mark their intersection appoint a

Step-by-step explanation:

EF is a segment so it's a line with the end points as E and F. Line RS bisects(cuts in half) line EF. Then where the two lines meet is where A is.

Hope this helped.

∠ B ≈ 53°

Step-by-step explanation:

Using the tangent ratio in the right triangle

tan B = = = , then

∠ B = ( ) ≈ 53° ( to the nearest degree )