In a triangle ABC, sin²A + sin²B + sin²C = 2 then the triangle is ………. triangle.
A. equilateral
B. isosceles
C. right
D. scalene
Answer:C
In a triangle ABC, sin²A + sin²B + sin²C = 2 then the triangle is ………. triangle.
A. equilateral B. isosceles C. right D. scalene