What is the mistake done by me Why theta is greater than or equal to pie and less than - Maths - Inverse Trigonometric Functions

Question

What is the mistake done by me Why theta is greater than or equal
to pie and less than or equal to 0 question 2 give the answer
experts by proving theta also

Manbar Singh · Accepted Answer

What is the mistake done by me. Why theta is greater than or equal to pie and less than or equal to 0.question 2.give the answer experts by proving theta also