Evaluate the limit with tangent

The video tutorial explores the manipulation and simplification of trigonometric expressions, focusing on sine squared and cosine squared functions. It demonstrates how to rewrite and break down these expressions to evaluate limits, particularly when substituting zero. The tutorial emphasizes understanding the unit circle and the importance of practice in mastering these concepts.

What transformation is applied to the sine function in the text?

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Describe the relationship between sine and cosine as mentioned in the text.

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Explain the significance of rewriting sine squared of X in the context provided.

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What happens when you plug zero into the sine function according to the text?

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What is the outcome of the expression when zero is substituted for sine of X?

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