Question

In triangle ABC, what is the measure of angle C if A = 100°, a = 125, and c = 10?

4.52°

8°

12.31°

Angle C does not exist; no triangle can be formed.

Answer 1

Use the laws of sin

sinA/a=sinC/c

Answer 2

*sine

Answer 3

remember when your looking for an angle, you have to use sin^-1

Answer 4

so how am I going to set the formula up?

Answer 5

\[\frac{ \sin100 }{ 125 }=\frac{ sinC }{ 10 }\]

Answer 6

use a calculator and solve for sin C

Answer 7

so its 12.31

Answer 8

no you forgot to plug in sin^-1

Answer 9

sin^-1(sin100(10)/(125)=angle c

Answer 10

yup I knew it 4.519

Answer 11

good job