Sagot :
Answer:
If θ in a negative angle -θ is from 0 to 90 degrees, then its reference angle is θ. For example, the reference angle of -78° is 78°.
Answer:
If θ in a negative angle -θ is from 0 to 90 degrees, then its reference angle is θ. For example, the reference angle of -78° is 78°.