Question:
Angle α is in quadrant III and angle β is in quadrant IV. If
Last updated: 7/10/2022
![Angle α is in quadrant III and angle β is in quadrant IV. If](https://media.kunduz.com/media/sug-question/raw/84447370-1657448089.54349.jpeg?h=512)
Angle α is in quadrant III and angle β is in quadrant IV. If sin α = - and cos β = 1/2, find cos(α + β).
Last updated: 7/10/2022
Angle α is in quadrant III and angle β is in quadrant IV. If sin α = - and cos β = 1/2, find cos(α + β).