# Finding the derivative of this trig function

homework

## Relevant Equations:

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Para f (θ) = √3.cos² (θ) + sen (2θ), uma inclinação da reta tangente, uma função em θ = π / 6, é?

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berkeman
Mentor
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?

Mark44
Mentor
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.

Delta2 and berkeman