Question

SAT subject test question:
A triangle has sides measuring 3,5,and 7 inches. What is the measure of its largest angle?

Answer 1

@.Sam.

Answer 2

@zepdrix

Answer 3

The largest angle will be opposite the longest side length.
So we can draw it like this.And from here, I think we can use the `Law of Cosines` to solve for angle C.

Answer 4

\[\large c^2=a^2+b^2-2ab \cos C\]

Answer 5

Understand how to solve it from here? :D

Answer 6

yes! Thank you :)