Finding the derivative of this trig function

In summary, the question asks to find the slope of the tangent line to the curve represented by f (θ) = √3.cos² (θ) + sen (2θ) when θ = π / 6. This can be done by taking the derivative of the function and evaluating it at θ = π / 6.
  • #1
leticia beira
4
0
Homework Statement
homework
Relevant Equations
--
Para f (θ) = √3.cos² (θ) + sen (2θ), uma inclinação da reta tangente, uma função em θ = π / 6, é?
 
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  • #2
leticia beira said:
Homework Statement:: homework
Relevant Equations:: --

For f (θ) = √3.cos² (θ) + sen (2θ), a slope of the tangent line, a function at θ = π / 6, is it?
Your attachments are not working for some reason. It looks like it might be a file security issue. What format are the files that you are trying to attach?
 
  • #3
berkeman said:
Your attachments are not working for some reason. It looks like it might be a file security issue. What format are the files that you are trying to attach?
I don't think there is an attachment, other than possibly the translation from Portuguese to English.
I see post #1 in Portuguese, but the quoted text in post #2 is in English.

A better translation is, I believe, the following:
If ##f(\theta) = \sqrt 3 \cos^2(\theta) + \sin(\theta)##, find the slope of the tangent to the curve when ##\theta = \frac \pi 6##.​

@leticia beira, have you tried taking the derivative, ##f'(\theta)## and evaluating it at ##\theta = \frac \pi 6##? That seems to be what the question is asking for.
 
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Likes Delta2 and berkeman

FAQ: Finding the derivative of this trig function

1. What is the definition of a derivative?

The derivative of a function is the rate of change of that function at a specific point. It represents the slope of the tangent line to the function at that point.

2. How do you find the derivative of a trigonometric function?

To find the derivative of a trigonometric function, you can use the basic rules of differentiation, such as the power rule, product rule, and chain rule. You can also use the specific derivatives of trigonometric functions, such as sin(x)' = cos(x) and cos(x)' = -sin(x).

3. What is the process for finding the derivative of a trigonometric function?

The process for finding the derivative of a trigonometric function involves using the basic rules of differentiation and the specific derivatives of trigonometric functions. You also need to identify the trigonometric function and its argument, and then apply the appropriate rule.

4. Can you provide an example of finding the derivative of a trigonometric function?

Sure, let's find the derivative of f(x) = 2sin(x). First, we identify the trigonometric function (sin) and its argument (x). Then, we use the specific derivative of sin(x)' = cos(x). Finally, we apply the constant multiple rule to get f'(x) = 2cos(x).

5. Why is finding the derivative of a trigonometric function important?

Finding the derivative of a trigonometric function is important because it allows us to analyze the behavior of the function, such as identifying critical points, finding the maximum and minimum values, and determining the concavity of the graph. It is also essential in many real-world applications, such as physics, engineering, and economics.

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