JEE Advanced Mathematics question
Not in JEE syllabus
Let be a triangle such that and let denote the lengths of the sides opposite to respectively. The value(s) of for which , and is (are)
Answer: (B)
Solution
By the cosine rule, . Note
- = (a - c)(a + c) = - + 3x + 2) = x(x-1)(x+1)(x+2) = x(x+2) b.
So , i.e.
+ x + 1)
See the full step-by-step solution
Create a free account to read the complete working (6 steps), and practise questions like this in a timed test.
Create a free account