Question

Find the length of a round to the nearest tenth
C=120 degrees b=5 c=11

Answer 1

Answer: a=7.6

Explanation:

solve for angle C:

`(sinc)/(5) =(sin120)/(11)`

`11sinc=5sin120`

`C=23.2`

solve for A:

=180-(120+23.2)

=36.8

solve for a:

Using the law of sines

`(sin120)/(11) =(sin36.8)/(a)`

`asin120=11sin36.8`

`a=7.6`