Chapter 8.4, Problem 18AYU

To determine

To find: The area of the given triangle round to two decimal points.

Answer to Problem 18AYU

Solution:

$Area \approx 1.73$

Explanation of Solution

Given:

$b = 4, c = 1, A = 120°$

Formula used:

$K = \frac{1}{2} bc\text{sin}A$

Calculation:

$b = 4, c = 1, A = 120°$

Area of the triangle is given by

$K = \frac{1}{2} bc\text{sin}A$

$K = \frac{1}{2} * 4 * 1 * \text{sin}120°$

$K \approx 1.73$

$Area \approx 1.73$