AP EAMCET2011MathematicsInverse Trigonometric Functions
For 0 < x , ⁻¹( x) is equal to
Options
- A( x 2 )
- B( x 2 )
- C(1+ x)
- D(1+ x)
Correct answer
A. ( x 2 )
Step-by-step solution
We know that ⁻¹(y)= (y+ 1+y^2 ) Put y= x aligned ⁻¹( x) & = ( x+ 1+ ^2 x ) & = ( x+ cosec ^2 x ) & = ( x+ cosec x) & = ( 1+ x x ) aligned aligned & = ( 2 ^2 x / 2 2 x / 2 x / 2 ) & = ( x / 2) aligned