PLS HELP!! Solve for an angle in right triangles

BC = ???

round your answer to the nearest hundredth

The people who have answered gave me the wrong answer pls help me

Write the pair of fractions as a pair of fractions with a common denominator

Ineed someone to me answer my question i have to have this done and knocked out

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.