Question

Cos c and the angle c is 5 to the power of 2

Answer 1

GivenRecall: SOHCAHTOASolution
`\begin{gathered} cos\text{ C=}(5)/(5√(2)) \\ cancel\text{ the common factor 5} \\ cos\text{ C=}(1)/(√(2)) \end{gathered}`

Rationalize

`\begin{gathered} (1)/(√(2))*(√(2))/(√(2))=(√(2))/(2) \\ \end{gathered}`The final answerOption B
`(√(2))/(2)`