Sin(285) is a number, not an angle.
The reference angle for 285 degrees is 285-360 = -75 degrees.
Chat with our AI personalities
complementary angle.
Since the angle of 331⁰ is in the fourth quadrant, then the measure of its reference angle in the first quadrant is 360⁰ - 331⁰ = 29⁰ .
137
Yes; if angle of incidence is zero angle of refraction is zero regardless of index: sin theta r = (n1/n2) sin theta i
0.766