It is 45 + 360*k deg or 135 + 360*k degrees where k is an integer.
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Oh honey, cos 45 degrees is just 0.7071. It's like asking me what color the sky is - it's blue, duh. So, go ahead and plug that number into your trig functions and strut your stuff with that knowledge.
cos(195) = cos(180 + 15) = cos(180)*cos(15) - sin(180)*sin(15) = -1*cos(15) - 0*sim(15) = -cos(15) = -cos(60 - 45) = -[cos(60)*cos(45) + sin(60)*sin(45)] = -(1/2)*sqrt(2)/2 - sqrt(3)/2*sqrt(2)/2 = - 1/4*sqrt(2)*(1 + sqrt3) or -1/4*[sqrt(2) + sqrt(6)]
When the angle X = 45 or 225 degrees, or any other angle that falls at the same position as one of these angles in polar coordinates.
45 degrees. 360 degrees divided by 8 is 45.
The supplement of an angle is the angle that, when added to the original angle, equals 180 degrees. Therefore, to find the supplement of 135 degrees, we subtract 135 from 180. The supplement of 135 degrees is 45 degrees.