Question

Is it possible to find a spherical triangle having the following angles? Explain why?

A = 160° B = 65° C = 90°

Answer 1

Requirements:

1.The sum of the two angles must be less than 180 °

2.The sum of the tree angles must be less than 540 °

Prove it:

$B+C=155° < 180°$

$A+B+C=295° <540°$

Answer: It is possible to find a spherical triangle.