Question

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

Answer 1

`"area "~~22.55" square units"`

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"`