Questions: 5. (5 pts.) Find the exact value for each of the indicated trigonometric functions of θ. Show your work. cos (θ)= cos (θ)= tan (θ)= sec (θ)= cot (θ)=

5. (5 pts.) Find the exact value for each of the indicated trigonometric functions of θ. Show your work.

cos (θ)=

cos (θ)=  tan (θ)=
sec (θ)=  cot (θ)=
Transcript text: 5. (5 pts.) Find the exact value for each of the indicated trigonometric functions of $\theta$. Show your work. \[ \cos (\theta)= \] \[ \begin{array}{ll} \cos (\theta)= & \tan (\theta)= \\ \sec (\theta)= & \cot (\theta)= \end{array} \]
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Solution

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Solution Steps

Step 1: Find the length of the opposite side.

Using the Pythagorean theorem ($a^2 + b^2 = c^2$), where $a$ and $b$ are the legs of the right triangle and $c$ is the hypotenuse, we can find the length of the side opposite to $\theta$. Let's call this side $x$. We are given that one leg is 4 and the hypotenuse is 7, so we have:

$4^2 + x^2 = 7^2$

$16 + x^2 = 49$

$x^2 = 33$

$x = \sqrt{33}$

Step 2: Calculate cos(θ)

$\cos(\theta) = \frac{\text{adjacent}}{\text{hypotenuse}} = \frac{4}{7}$

Step 3: Calculate tan(θ)

$\tan(\theta) = \frac{\text{opposite}}{\text{adjacent}} = \frac{\sqrt{33}}{4}$

Step 4: Calculate sec(θ)

$\sec(\theta) = \frac{1}{\cos(\theta)} = \frac{1}{\frac{4}{7}} = \frac{7}{4}$

Final Answer:

$\cos(\theta) = \frac{4}{7}$

$\tan(\theta) = \frac{\sqrt{33}}{4}$

$\sec(\theta) = \frac{7}{4}$

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