cos 285

Explanation: For cos 285 degrees, the angle 285° lies between 270° and 360° (Fourth Quadrant ). isuzu giga fvz 34 p 285 ps Since cosine function is positive in the fourth quadrant, thus cos 285° value = (√6-√2)/4 or 0. cos 285 2588190 Since the cosine function is a periodic function, we can represent cos 285° as, cos 285 degrees = cos (285° + n × 360°), n ∈ Z