Question

please solve this is urgent.

Answer 1

In triangle ACB 3 angle is 120 deg..
so, next to c is X which is 60 deg.. than third angle of triangle is 180-60+30=90 so other side Y angle is aslo 90
your final answer is X = 60 and Y= 90

Answer 2

Hope u like my process
======================
Note
=-=-=-
for a triangle

=> to have max length of third side then,
The value will be < A1 + A2

=> For minimum length of third side,

The value will be > A2 - A1

________________________
Thus the third side lies between,

=> A2 - A1 < x < A1 + A2

=> 15 - 12 < x < 15 + 12

=> 3 < x < 27.

________________________
Explanations.
=-=-=-=-=-=-=-=-
In vector calculus,

We got to know about

Resultant side will be max at A1 + A2

And min at A1 - A2.

But for triangle if they are equal to either of A1-A2 or A1 +A2.. Then it will be straight line.
_______________________

The two triangles can be like this having 179° angle or 1°... But can't be 0° or 180°.

Thus the third side lies between 3< x< 27
____-___________________
Hope this is ur required answer

Proud to help you