Verify an identify using the difference formula of two angles

The video tutorial explains the process of verifying trigonometric identities by equating the left and right sides. It guides students on choosing the appropriate side to work with and applying trigonometric formulas. The tutorial also covers the use of unit circle values, particularly for π, to simplify expressions. The session concludes with a summary of the identity verification process.

How does the cosine of π relate to the sine of an angle?

What is the significance of verifying an identity in trigonometry?