Prove the co function identities by sum and difference formulas

The video tutorial explains the process of subtracting two angles using a specific formula. It emphasizes the importance of labeling angles as U and V to avoid confusion. The tutorial then applies the cosine formula to the subtraction of angles and clarifies the concept of U - V. Finally, it simplifies the expression using trigonometric identities, demonstrating the result of the identity.

What is the formula applied for the subtraction of two angles?

How can you label the angles involved in the subtraction?

What does the expression U - V represent in the context of this identity?

What is the value of cosine of π/2 and how does it affect the identity?

Explain the significance of the sine of X in the derived identity.