Question

Find the angle for each of the following conditions

Answer 1

\[\sin \theta =\frac{ 1 }{ 5 }\]
\[\cos \alpha =-\frac{ 2 }{ 7 }\]
\[\tan \beta =\frac{ 4 }{ 3 }\]

Answer 2

use arcsin, arccos, and arctan functions

Answer 3

Is arcsin of 1/5=74.2 ?