SubArea: Sine, cosine, tangent and cotangentLevel: BProject ID: 2010016801Source Problem: 1003076501Accepted: 0Clonable: 1Easy: 1To which quadrant does the angle \( \varphi \) belong if \( \cos\varphi=0.8 \) and \( \sin\varphi < 0 \)?IV.I.II.III.
