In Triangle ABC,a=16,b=13, and Angle C=52 degree. Find little c?

Question

This is a solving triangle problem. It deals with upper and lower case letters. So my question is what is little c? :)

Answer 1

Assuming the lowercase letters denote the lengths of the sides opposite of those corresponding angles A, B and C,. then you just have to use the Law of Cosines to find c:
c^2 = 16^2 + 13^2 - 2(16)(13)cos(52)

Answer 2

Triangle ABC means the three different angles
the little abc are the three sides

Answer 3

Standard notation uses lower case letters to represent sides and capital letters to denote vertices.

Use the Law of Cosines.

c² = a² + b² - 2ab*cosC

c = √[a² + b² - 2ab*cosC]

Just plug in the numbers and you have your answer.

Answer 4

c^2 = a^2 + b^2 - 2ab cos C
c^2 = 256 + 169 - 2(16)(13) (0.6157)
c^2 = 256 + 169 + 256.13
c^2 = 168.87
c = 12.99