Book: RD Sharma - Mathematics (Volume 1)
Chapter: 4. Inverse Trigonometric Functions
Subject: Maths - Class 12th
Q. No. 3 of Exercise 4.2
Listen NCERT Audio Books to boost your productivity and retention power by 2X.
3
Find the domain of f(x) = cos–1 x + cos x.
Domain of 
lies in the interval [–1, 1].
Domain of cos x lies in the interval [0, 
] = [0, 3.14]
Domain of 
+ cos x lies in the interval [–1, 1].
