Question

Find the area of the triangle described below. Round to the nearest hundredth.C = 43°, b = 21, a = 28

Answer 1

Solution

Recall the Formula

$\text{Area}=\frac{1}{2}ab\text{ sin}C$

Given

C = 43°, b = 21, a = 28

$\begin{gathered} \text{Area}=\frac{1}{2}\times28\times21\times\sin 43 \\ \text{Area}=200.5075 \end{gathered}$

The final answer

$\text{Area}=200.5075unit^2$