Question

can someone please show me where i went wrong in the following problem... use an appropriate local linear approximation to estimate the value of the given quantity. cos(31*)

Answer 1

Y = cos(x) sqrt(3)/2 = cos(30º) dy = -sin(x)*dx dy = -sin(30º)*(pi/180) = (1/2)*(pi/180) y + dy = cos(x) - sin(x)dx y + dy = sqrt(3)/2 - (1/2)*(pi/180) = 0.8573
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