Question

What is the reference angle for 289°? A. 71° B. 19° C. 11° D. 89°

Answer 1

Given:

Angle θ=289°.

For angles from 270° to 360°, the reference angle can be calculated by subtracting the given angle from 360° .

The reference angle of θ can be calculated as:

`\begin{gathered} 360\degree-\theta=360\degree-289\degree \\ =71\degree \end{gathered}`

Therefore, reference angle of 289° is 71°.