How do you solve the inverse trig function cos(arccos3π)? Trigonometry Inverse Trigonometric Functions Inverse Trigonometric Properties 1 Answer Luca F. Jun 11, 2015 It does not exist. Explanation: y=arccos(x) is a function defined in the interval [−1,1] So it does not exist for the value 3π>1. arccos(3π) does not make any sense! Answer link Related questions How do you use the properties of inverse trigonometric functions to evaluate tan(arcsin(0.31))? What is sin(sin−1√22)? How do you find the exact value of cos(tan−1√3)? How do you evaluate sec−1√2? How do you find cos(cot−1√3) without a calculator? How do you rewrite sec2(tan−1x) in terms of x? How do you use the inverse trigonometric properties to rewrite expressions in terms of x? How do you calculate sin−1(0.1)? How do you solve the inverse trig function cos−1(−√22)? How do you solve the inverse trig function sin(sin−1(13))? See all questions in Inverse Trigonometric Properties Impact of this question 4934 views around the world You can reuse this answer Creative Commons License