Question

Please answer que-4.

Answer 1

Answer:

Option a) is ur answer.

Step-by-step explanation:

plz mark it as brainliest answer!!!!

Answer 2

option a is correct. you can do so by using trigonometry.

you have one angle.

so

tan30=BC/AB

1/√3=20/AB

AB=20√3

Since only option A has AB=20√3

therefore option a is correct.

You can check the second side by Pythagoras theorem or using sin30.