defence exam SSB Head Constable (Communication) 2023 Mock Test Mathematics Trigonometry Properties of Triangles
In a triangle ABC, (a + b + c)(b + c - a) = λbc. Consider the following statements:
I: cos A = \(\frac{λ-2}{2}\)
II: For λ = 1, ABC is a right-angled triangle.
Which one of the following is INCORRECT in respect of the above statements?
1
Only I
2
Only II
3
Both I and II
4
None