If cos2A + cos2B + cos2C = 1 then ABC is a Right angle triangle. Ans

If cos2A + cos2B + cos2C = 1 then ABC is a

(a) Right angle triangle
(b) Equilateral triangle
(c) All the angles are acute
(d) None of these

Question Posted / cryolife

Answer Posted / cryolife

If cos2A + cos2B + cos2C = 1 then ABC is a Right angle
triangle.

Ans is (a).

Is This Answer Correct ?

29 Yes

5 No

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