Answer:
Please, refer to the images below
Step-by-step explanation:
We need to solve for x in the equation
cos (x+ pi) ^2 = sin (x)
cos (x+ pi) = - cos(x)
(-cos (x)) * (-cos (x)) = sin(x)
cos(x) ^2 = sin(x)
We know that
cos(x) ^2 + sin(x) ^2 = 1
cos(x) ^2 = 1 - sin(x) ^2
1 - sin(x) ^2 = sin(x)
sin(x) ^2 + sin (x) -1 = 0
Let A = sin(x)
A^2 + A - 1 = 0
(solutions attached in picture 1)
This means that
x = arcsin(A)
(solutions attached in picture 2)
Hello from MrBillDoesMath!
Answer:
Cchoice B is the correct answer.
Discussion:
As stated by an earlier respondent, choice B is the correct answer. But why?
From the diagram, point B lies between 0 and 1 which means B is positive
From the diagram, point C lies between -1 and -2 which means C is negative
The quotient of a negative number by a positive number is negative, giving the answer as choice c
Regards,
MrB
P.S. I'll be on vacation from Friday, Dec 22 to Jan 2, 2019. Have a Great New Year!
Answer:
Step-by-step explanation:
Answer:
3/-4
Step by step explanation:
Answer:
6^3=6×6×6=216. So, the answer is 6x6x6 and 216.
