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?

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How can you label the angles involved in the subtraction?

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

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

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

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