# How do you find the area of triangle ABC given C=25^circ, a=4, b=7?

Jan 9, 2017

$A = 5.92 \text{ } s q . u n i t s \left(2 \mathrm{dp}\right)$

#### Explanation:

One of the formulas for area of a triangle is:

$A = \frac{1}{2} \times a \times b \times \sin C$

In this case we have

$A = \frac{1}{2} \times 4 \times 7 \times \sin 25$

$A = 5.916655664$

$A = 5.92 \text{ " sq.} u n i t s \left(2 \mathrm{dp}\right)$