# How do you find the area of triangle ABC given A=70, b=4, c=12?

##### 1 Answer

Mar 19, 2017

#### Explanation:

The area ( A ) of triangle ABC can be calculated using.

#color(red)(bar(ul(|color(white)(2/2)color(black)(A=1/2bcsinA)color(white)(2/2)|)))#

#"here " b=4,c=12" and angle "A=70^@#

#rArrA=1/2xx4xx12xxsin70^@#

#color(white)(xxxx)=24xxsin70^@#

#color(white)(xxxx)~~22.55" square units"#