Simplifying a trigonometric product

In summary, to simplify a trigonometric product, you can use trigonometric identities such as the product-to-sum and sum-to-product identities. Not all trigonometric products can be simplified, as it depends on the specific functions involved. The purpose of simplifying a trigonometric product is to make it easier to work with and reveal patterns. A product is considered simplified when it cannot be further reduced using known identities. Tips for simplifying include checking for common factors, knowing trigonometric identities, and practicing.
  • #1
Manni
42
0
Was just double checking if we can simplify this in the following way,

∫ sinx * √(1 + cos2x) dx = ∫ sinx * (1 + cosx) dx
 
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  • #2
Manni said:
Was just double checking if we can simplify this in the following way,

∫ sinx * √(1 + cos2x) dx = ∫ sinx * (1 + cosx) dx
No.

Is [itex]\sqrt{3^2+4^2}=7\ ?[/itex] No !

[itex]\sqrt{3^2+4^2}=\sqrt{25}=5\ .[/itex].

To solve that integral, use substitution .

Ask your self, what's the derivative of cos(x) ?
 

1. How do you simplify a trigonometric product?

To simplify a trigonometric product, you can use trigonometric identities such as the product-to-sum and sum-to-product identities. These allow you to rewrite the product as a sum or difference of trigonometric functions, which can then be simplified further.

2. Can all trigonometric products be simplified?

No, not all trigonometric products can be simplified. It depends on the specific trigonometric functions involved and their arguments. Some products may already be in their simplest form and cannot be simplified any further.

3. What is the purpose of simplifying a trigonometric product?

The main purpose of simplifying a trigonometric product is to make it easier to work with in mathematical calculations. Simplifying can also help reveal any patterns or relationships between different trigonometric functions.

4. How do you know when a trigonometric product is simplified?

A trigonometric product is considered simplified when it cannot be further reduced using any known trigonometric identities or rules. This means that all common factors have been factored out and any remaining terms cannot be combined or simplified any further.

5. Are there any tips for simplifying a trigonometric product?

One useful tip for simplifying a trigonometric product is to always check for common factors that can be factored out. It is also helpful to familiarize yourself with common trigonometric identities and their applications in simplifying products. Practice and experience can also improve your ability to simplify trigonometric products efficiently.

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