omgineedhelp123
Junior Member
- Joined
- Nov 10, 2020
- Messages
- 87
How do I use cosine if I’m not given any SSS or SAS?Use the law of cosines to find length of TR, then use the law of sines to determine angle R.
ohhhhh I thought those were two different triangles!!look again ... you have SAS
law of cosines ...
[MATH]a^2 = b^2 + c^2 - 2bc\cos{A}[/MATH]
Solving SAS triangles
How am I supposed to write it then?I don't think you are doing operations in the correct order in a)
It's written correctly, it's the calculation that's wrong. You didn't multiply 2*41*28 by cos(70) before doing subtraction.How am I supposed to write it then?
OMG THANK YOUUUIt's written correctly, it's the calculation that's wrong. You didn't multiply 2*41*28 by cos(70) before doing subtraction.