Answer:
234.3
Step-by-step explanation:
You use Law of Cosines:
a^2 = b^2 + c^2 - 2bc(cosA)
<em>Plug in the values</em>
a^2 = 400^2 + 375^2 - 2(400*375)(cos35)
a = sqrt(160000+140625-300000(cos35))
a = sqrt(300625 - 300000cos(35))
a is approx. 234.263498466, which rounds to 234.3
Angle ACB And Angle ECD
C. Add the equations
Adding both the equations will help eliminating 5y.
19
Use the given functions to set up and simplify
-12 + 6
