Verify That Each Equation Is an Identity $$\cot x \sec ^ { 4 } x = \cot x + 2 \tan x + \tan ^ { 3 } x$$

question 131

Essay

Verify that each equation is an identity.
- $$\cot x \sec ^ { 4 } x = \cot x + 2 \tan x + \tan ^ { 3 } x$$

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Definitions:

Posterior Neck Muscles

The group of muscles located at the back of the neck, including the trapezius and the splenius muscles, responsible for movements of the head and shoulders.

Abduction

Movement away from the midline.

Adduction

The movement of a body part toward the body's midline.

Rotation

Movement of a structure about its axis.