Q73 / 160 · TS EAMCET 2007 · Mathematics

In $\triangle A B C$, with usual notation, observe the two statements given below : (I) $r r_1 r_2 r_3=\Delta^2$ (II) $r_1 r_2+r_2 r_3+r_3 r_1=s^2$ Which of the following is correct?

  • Correct answer
    A
    Both I and II are true
  • B
    I is true, II is false
  • C
    I is false, II is true
  • D
    Both I and II are false

Solution

We know that $\Delta^2=r r_1 r_2 r_3$ and $s^2=r_1 r_2+r_2 r_3+r_3 r_1$ So, both the statements are true.

Hence, the correct answer is option: 'A'.

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