Chapter 14, Problem 1R

Find each value rounded to four significant digits:

$\text{tan143}°$

To determine

To calculate: The value of $\tan 143°$ to the four decimal places.

Answer to Problem 1R

Solution:

The value of $\tan 143°$ is $-0.7536$.

Explanation of Solution

Given Information:

The provided trigonometric ratio is $\tan 143°$.

Calculation:

Consider the provided trigonometric ratio,

$\tan 143°$

Use a Ti-83 calculator to find the value of $\tan 143°$ rounding to four significant digits.

Step 1: Press ‘ON’ key.

Step 2: Press ‘MODE’ key and set the mode to a degree.

Step3: Press ‘TAN’ key, enter the value $143$ and press enter to obtain the value of $\tan 143°$.

The value obtained as,

$\tan 143°=-0.7535$

Therefore, the value of $\tan 143°$ is $-0.7536$.