KCET2016MathematicsInverse Trigonometric Functions
The simplified form of ( ⁻¹ ( x y )- ⁻¹ ( x-y x+y ) ) is equal to
Options
- A( 00 )
- B( I I 4 )
- C( 2 )
- DII
Correct answer
B. ( I I 4 )
Step-by-step solution
Given that, ( ⁻¹ ( x y )- ⁻¹ ( x-y x+y ) ) [ array l = ⁻¹ ( x y )- ⁻¹ ( 1- y x 1+ y x ) = ⁻¹ ( x y )- ( ⁻¹ 1- ⁻¹ y x ) = ⁻¹ ( x y )+ ⁻¹ ( y x )- ⁻¹ 1 = ⁻¹ ( x y )+ ⁻¹ ( x y )- ⁻¹ 1 array ] Since, ( ⁻¹ x+ ⁻¹ x= I I 2 ) Then [ = I I 2 - ⁻¹ 1= I 2 - I 4 = I 4 ]