Trigonometric-Identity Problem (Quick Question)

regulargamer23 New MathsLink Posts: 1	Trigonometric-Identity Problem (Quick Question) Jun 1, 2018 11:31:55 GMT via Tapatalk Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by regulargamer23 on Jun 1, 2018 11:31:55 GMT Shouldn't the quadrant in the orange circle (or whatever it looks like) match with the quadrant in the green one (i.e., Quadrant I)? Thanks.