Chapter 12.4, Problem 13WE

To determine

Find the value of the function $\cos 52°43\text{'}$ to four significant digits.

Answer to Problem 13WE

The value for the given function $\cos 52°43\text{'}$ is $-0.3250$ .

Explanation of Solution

Given information: The given function is $\cos 52°43\text{'}$ .

Calculation: The value for the given function $\cos 52°43\text{'}$ is evaluated as,

  $\begin{array}{c}\cos 52°43\text{'}=\cos \left(52°+43\text{'}\right)\\ =\cos \left(52°+{\left(\frac{43}{60}\right)}^{°}\right)\mathrm{....}\left(\because 1°=60\text{'}\right)\\ =-0.3250\end{array}$