Question

Explain why it is impossible to find an answer to this question:

Solve for angleT △𝑅𝑆𝑇, given 𝑟=5.7𝑘𝑚, 𝑠=3.8𝑘𝑚, 𝑡=1.1𝑘𝑚

Answer 1

Rule: The side of a triangle is less than the sum of the other two sides. 
With such data, the triangle △𝑅𝑆𝑇 does not exist, since r>s+t (5.7>3.8+1.1)