Home › CBSE Class 12 (Commerce) › Mathematics › Inverse Trigonometric Functions › Find cos⁻¹(cos 2π) as a principal value.
Find cos⁻¹(cos 2π) as a principal value.
A0
B2π
Cπ
Dπ/2
Answer & Solution
Correct answer: A. 0
cos 2π = 1 and cos⁻¹(1) = 0, the principal value, not 2π.
Related questions
Principal cot⁻¹ evaluated at 0 equalsCotangent restricted to which interval is bijective onto R?Inverse trigonometric functions are important in calculus because theyFor an invertible f, what does (f⁻¹ o f)(x) equal?The inverse of f exists only if f isThales is credited with finding the height of a pyramid using what?Which country is credited with starting the study of trigonometry?Who suggested the symbols sin⁻¹x and cos⁻¹x for arc sin x and arc cos x?