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3250
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X = -2 is not a function. A function requires an input and an output. Examples:
y = x
f(x) = x2
The value of the cosine of angle 
is 1.
Given a point 
that is a terminal arm of an angle in standard position, by trigonometric relations we have the following expression for the cosine:
(1)
Where:
- - Angle measure, in sexagesimal degrees.
- Horizontal position of the point of the terminal arm, no unit.
- Vertical position of the point of the terminal arm, no unit.
If we know that 
and 
, then the cosine of the angle is:
The value of the cosine of angle is 1.
To learn more on trigonometric relations, we kindly invite to check this verified question: brainly.com/question/6904750
