Question 617546
P = 2x 10 sin y + 2x 10 cos y
P = 20 (sin y + cos y)
Convert to R sin (y + a) format
R = 20 sqrt( 1 + 1)= 20 sqrt 2
tan a = 1/1 =1 a = 45
So P = 2- sqrt 2 ( sin (y - 45))