As the cosine of an angle decreases, what happens to the value of the angle?

When considering the behavior of the cosine function, it’s important to understand the relationship between the angle and its cosine value. The cosine function decreases as the angle increases within the range from 0° to 180°. Therefore, as you move from a smaller angle towards a larger angle, the cosine value drops from 1 (at 0°) to -1 (at 180°).

In this context, when the cosine of an angle decreases, it indicates that we are moving to a larger angle. This reflects the fundamental characteristic of the cosine function, where smaller angles correspond to higher cosine values and larger angles correspond to lower cosine values. Thus, an increase in the angle is consistent with a decrease in its cosine value, making the correct answer reflect this relationship accurately.

Understanding this relationship is crucial for applications in trigonometry and power engineering, where angular measurements and their trigonometrical implications often play a role in analysis and calculations.