Question

PLS HELP:Find the side length, C.
Round to the nearest tenth.

Answer 1

`\huge\boxed{c = 14.9}`

Explanation:

Using Cosine Rule

`c^2 = a^2 + b^2 -2abCosC`

Where a = 11 , b = 7 and C = 110

`c^2 = (11)^2+(7)^2-2(11)(7)Cos 110`

`c^2 = 121+49-154 (-0.34)\\c^2 = 170+52.7\\c^2 = 222.7`

Taking sqrt on both sides

c = 14.9