Determine Whether the Statement Is True or False

question 170

True/False

Determine whether the statement is true or false.
-cos 135° = cos 225° cos 90° + sin 225° sin 90°

---

Definitions:

Falling Dream

A common dream experience where the individual senses themselves falling, often leading to sudden muscle jerks or awakening.

Myths

Traditional stories, often of unknown origin and with a blend of factual and fictional elements, that are used to explain natural phenomena, cultural practices, or societal norms.

Night Terror

A sleep disorder causing feelings of terror or dread, typically occurring in the first few hours of stage 3-4 non-REM sleep.

Autonomic Arousal

The automatic activation of the autonomic nervous system, influencing physiological responses such as heart rate, digestion, and respiratory rate, often in reaction to stress or excitement.