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-288 radians is exactly -288 radians: no more, no less!
Because a radian is a far more versatile unit of measurement, especially in advanced mathematics.
ans: 50 degree. its complement is 90-50=40 degree
The relationship between the radius and circumference of a circle and related shapes becomes simpler. Trigonometric ratios can be defined as infinite series more simply in terms of radians: for example: sin(x) = x - x3/3! + x5/5! - ... And last, my favourite equation: e(i*pi) + 1 = 0 (Euler's equation) would not have the same beauty and brevity.
Acute.