How to find c? Please read the image and help me please!
1 Answer
Explanation:
First, we need to find the value of the missing angle,
Let's add that, along with the value of
Then, we can either:
- Solve for the value of
#c# directly using the law of sines; - or solve for
#a# , and then use the law of cosines to solve for#c# .
Obviously, the first way is simpler.
Here's how to do it the first way:
To find the value of
Or, we could also do it the second way to use both laws:
To find the value of
We now have two sides.
Apply the law of cosines: