COMEDK2015MathematicsInverse Trigonometric Functions
⁻¹(21)+ ⁻¹(13)+ ⁻¹(-8)=
Options
- A0
- B⁻¹ 26
- CNone of these
Correct answer
C. None of these
Step-by-step solution
We have, ⁻¹(21)+ ⁻¹(13)+ ⁻¹(-8)= ⁻¹ ( 1 21 )+ ⁻¹ ( 1 13 )+ ⁻¹(-8)= ⁻¹ ( 1 21 + 1 13 1- 1 21 1 13 )+ ⁻¹(-8)= ⁻¹ ( 34 272 )+ ( - ⁻¹ 8 ) [ ⁻¹(-x)= - ⁻¹ x ]= ⁻¹ ( 1 8 )- ⁻¹ 8+ = ⁻¹ ( 1 8 )- ⁻¹ ( 1 8 )+ =