Answered

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I need help with this practice problem I need to know if I’m correct.

I Need Help With This Practice Problem I Need To Know If Im Correct class=

Sagot :

Let's draw a picture of our problem:

The trigonometric value function of the angle beta will have the same value of the trigonometric value function of theta. Then, in order to find the cosine of beta, we can use the following right triangle

Therefore,

[tex]\cos \beta=\cos \theta=\frac{-4}{\sqrt[]{61}}[/tex]

or equivalently

[tex]\cos \beta=\frac{-4}{61}\sqrt[]{61}[/tex]

Therefore, the answer is correct.

View image CrissyK202759
View image CrissyK202759
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