Question

can you tell the answer plz

Answer 1

Answer:

l(AB) = 5$\sqrt{3}$

Step-by-step explanation:

Use 30 degree - 60 degree - 90 degree triangle theorem

according to it the side opposite to 30 degree angle is $\frac{1}{2\\}$ times the hypotenuse and side opposite to 60 degree angle $\sqrt{3\\}/2$ times the hypotenuse

Here , angle BAC is of 30 degree and angle ABC is of 90 degree so according to 30 degree  - 60 degree 90 degree triangle , angle ACB will be of 60 degree .

therefore side AB is opposite to 60 degree angle that is angle ACB  

Hence using 30 degree - 60 degree - 90 degree triangle theorem

l(AB) =$\sqrt{3}/2$  × 10 = 5 $\sqrt{3}$

And that is the answer