Explain why my calculator gives an error when you enter cos^-1 (5/4)
2 answers:
Answer:
see explanation
Step-by-step explanation:
To obtain a solution for 
(x) , then
- 1 ≤ x ≤ 1
That is the value of x cannot be greater than 1 or less than - 1
here x = 
= 1.25 which is greater than 1 , thus calculator will return ' error'
Step-by-step explanation:
because the is no answer for that in the calculator
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12+2x=6x
Answer:
slope: ½
y-intercept: -4½
Step-by-step explanation:
Slope: negative reciprocal of -2
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