Question

QUESTION 11R₁xAyWhich equation is true?OA2sin 40°= =yOB.cos 40°O C.tan 40°:O D.sin 40° =yyx40°E

Answer 1

Case: Trigonometry

Method:

The trigonometry functions for the triangle below are:

Hence:

`\begin{gathered} sin40\degree=(Opp)/(Hyp) \\ sin40\degree=(x)/(z) \end{gathered}`

And

`\begin{gathered} cos40\degree=(Adj)/(Hyp) \\ cos40\degree=(y)/(z) \end{gathered}`

And

`\begin{gathered} tan40\degree=(Opp)/(Adj) \\ tan40\degree=(x)/(y) \end{gathered}`

Final answer: Option (C)

`tan40\degree=(x)/(y)`