Question

can you solve this question i didnt solve this​

Answer 1

Given,

AB= 6√3 cm

AC= 12 cm

BC= 6 cm

$\sin(a) = ( \frac{6}{12} ) \\ \sin(a) = \frac{1}{2} \\ \sin(a) = \sin(30) \\ a = 30$

Answer 2

Step-by-step explanation:

As

(6√3)2 +(6)2 = (12)2

=AB2 + BC2 = AC2

i.e. sides of the triangle ABC satisfy the Pythagoras theorem

(hypotenuse)2 = (base)2 + (perpendicular)2

therefore, ABC is a right angled triangle

Now,

BC = 1/2 AC

By Converse of 30,60,90 triangle theorem

In right angled triangle if one side is half of the hypotenuse then the angle opposite to side is 30

therefore,angle A is 30