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In a triangle ABC the altitude from A is not less than BC and altitude from B is not less than AC. The triangle is 

(A) right-angled

(B) isosceles 

(C) obtuse angled 

(D) equilateral

1 Answer

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Best answer

Correct option (A) right-angled

c sinB ≥ a ⇒ sinC sinB ≥ sinA

and  a sinC ≥ b ⇒ sinC sinA ≥ sinB

⇒ sinC ≥ 1 ⇒ ∠C is π/2

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