Question

As θ increases from 0° to 90°, the value of cos θ tends toward which of the following?
Answers available: 0 and 1. (Putting pos/neg infinity is wrong so I just need to decide which).

Answer 1

The cosine of an angle is the x-coordinate of the point of intersection of the terminal side of the angle and the unit circle.

Answer 2

Is the answer 0?

Answer 3

When theta = 0 deg, cos(theta) = 1, since the x-coordinate of the point of intersection of the terminal side of of a zero-degree angle (in standard position) and the unit circle is 1.

Answer 4

I mean, the x-values are steadily decreasing so I assumed 0, but I am just making sure.

Answer 5

Correct.

Answer 6

Thank you :)