If x = 
, then the value of 
will be closest to ?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 ie 0.17
x =
x² = 1 + (√3/2) + 1 - (√3/2) -
x² = 2 - [ (2) × (1/2) ]
x² = 1, x = +1, x ≠ -1
=
=
= 3 - 2√2 = 3 - 2.8
= 0.20 ≈ 0.17