A point on the terminal side of an acute angle in standard position is (1, 2 √2). Find the cosine value of this angle.
1 answer:
Answer:

Step-by-step explanation:
The point at the terminal side of an acute angle is given by
.
That is,
and
.
Let r be the length of line segment drawn from the origin to the point and is given by the formula:

Substituting the values of x and y into r,



Thus,
Also,
is given by:

Substituting values of x and r,

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