Geometry Finding Area Using Law of Sines

[rachelmaddie]

I don’t know how to do this with the angle measures and side lengths given.
All I have so far is Area = (12) (13.5) sin105 but I don’t think that’s correct

 

[Dr.Peterson]

Why would that be wrong? Maybe because you left out the 1/2?

What result did you get?

 

[rachelmaddie]

Why would that be wrong? Maybe because you left out the 1/2?

What result did you get?

I get 1/2(12) (13.5) sin105 = 78.2399919294

 

[Dr.Peterson]

That's what I get.

 

[rachelmaddie]

S

That's what I get.

So, that is the correct method for finding area?

 

[Dr.Peterson]

It's one of several valid formulas, and the appropriate one for this problem.