192 = 361
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Sin(19) = 0.3256 approx.
The angular velocity of the second hand of a clock is pi/30 radians per second.
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1 revolution = 2*pi radianstherefore, k revs per second = 2*k*pi radians per second or if you still work in degrees, it is 360*k degrees per second.
Assuming that neither of the given sides is the hypotenuse, then if A is one of the acute angles, tan(A) = 19/63 So A = arctan(19/63) = 16.8 degrees. The other acute angle is 73.2 deg.