Step-by-step explanation:
because the is no answer for that in the calculator
Answer:
see explanation
Step-by-step explanation:
To obtain a solution for [tex]cos^{-1}[/tex] (x) , then
- 1 ≤ x ≤ 1
That is the value of x cannot be greater than 1 or less than - 1
here x = [tex]\frac{5}{4}[/tex] = 1.25 which is greater than 1 , thus calculator will return ' error'
