Question

Number 10Please just show the math and not the sentence explanations, I just want to use this problem as an example :)

Answer 1

Explanation

We are given the following right-angled triangle:

We are required to determine the indicated angle in the given figure.

This is achieved thus:

According to the image, we have:

`\begin{gathered} Opposite=9 \\ Adjacent=21 \end{gathered}`

Therefore, we have:

`\begin{gathered} \tan\theta=(opposite)/(adjacent) \\ \tan\theta=(9)/(21) \\ \theta=\tan^(-1)((9)/(21)) \\ \theta\approx23\degree \end{gathered}`

Hence, the answer is:

`23\degree`