Question

I am having trouble with simple tangent, chords, and basically circle things. I already completed all the answers but two are just really bugging me. Could anyone look over my answers and check if they are right. Also, could you maybe help me with the last two questions.

Answer 1

Here is the assignment I am working on

Answer 2

lets see Q4

Answer 3

Thanks for helping

Answer 4

Question 3 and 4 are giving me problems. I tried the Pythagorean therom on the third and it keeps coming out wrong. Its just too confusing