If

, then angle

is obtuse and triangle with sides a, b, c is obtuse triangle.
In an arbitrary triangle can be only one obtuse angle, and the side which lies opposite to the largest angle is the largest. Then since <span>angle

is opposite the side of length a</span> you can conclude that a>c and a>b.
Lovely let’s do the cha cha side
Answer:
That sign means raise to power e.g 5^2.
5 in 2 places which is 25.
Also meaning 5× 2= 25