Question

Cos(θ) is positive when θ lies in which quadrants?

Answer 1

The cosine function is positive in the first and fourth quadrants.

Step-by-step explanation:

The cosine function is positive in the first and fourth quadrants.

In the first quadrant, both the x and y coordinates are positive, so the cosine function is positive.

In the fourth quadrant, the x coordinate is positive and the y coordinate is negative, but since the cosine function only considers the x coordinate, it is still positive.