Could someone do a step-by-step? 2x < x − 4 ≤ 3x + 8
1 answer:
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Answer:
sin(-a)= -15 /17
Step-by-step explanation:
Alright, lets remember that sin(x) is odd function, which means that
wherever you watch an expression like this: sin(-a), you can use the odd functions property, and turn it like the following
sin(-a)= - sin(a)
Now, other thing to remember:
So, we can obtain any value for sin(x) function starting from the opposite function, cos(x), using the following:
So, if cos(a)= - 8 / 17, using the above equation we obtain the value for sin(a)
Using the odd function property, we get the following result
sin(-a)= - sin(a) = -15/17
A) 
is false. There is no solution.
B)
is false. There is no solution.
C)
is true. It has infinite solutions.
D)
is true. It has infinite solutions.
E)
is false. There is no solution.
B)
C)
D)
E)