Answer:
Step-by-step explanation:
Answer:
y= -3/4 -0.5
...................
I need help with chemistry if anyone can help just look at my question and answer it please
Answer:
See explanation
Step-by-step explanation:
The given trigonometric equation is
.
We take the inverse cosine of both sides to get:

to the nearest degree
None of the options satisfies the given equation.
But if the question is actually;

Then;
.
.
.
.
Or
.
In this case the answer will be B
Answer:
1 is 136, 2 is 44, annd 4 is 44
Step-by-step explanation:
-π/2 < arctan(x) < π/2
So cos(π/2) < cos(arctan(x)) < cos(0)
0 < cos(arctan(x)) < 1