Verify the Identity $\cos x + \sin x \tan x = \sec x$

question 99

Essay

Verify the identity. $\cos x + \sin x \tan x = \sec x$

---

Definitions:

Ethical Egoism

A moral philosophy suggesting that individuals should act in ways that promote their own best interest.

Self-Interest

The pursuit of one's own personal benefits, desires, or advantages, often regarded as a fundamental aspect of human behavior.

Contrary

Opposite in nature, direction, or meaning.

Ethical Hedonists

Individuals who believe that the moral value of actions is determined by the amount of pleasure or happiness they produce.