3 years ago

The point (3,-4) is on the terminal side of an angle 0. What is cos 0?

Mathematics

1 answer:

aleksandr82 [10.1K]3 years ago

3 0

9514 1404 393

Answer:

C. 3/5

Step-by-step explanation:

The distance from the origin to the given point is ...

d = √(3² +(-4)²) = √(9+16) = 5

The cosine of the angle is the ratio of the x-coordinate to this value:

cos(θ) = x/d

cos(θ) = 3/5

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