Sin(x+24) = cos(y-x) ; tan(z-24) - tan(y-z)=0 find: cos(y-z)

Cos(y-z) = Cos(z-24)

You have two equations in three unknowns, so no solution for the unknowns is possible.

The tangent equation tells you ...

... tan(z -24) = tan(y -z)

... z -24 = y -z . . . . . . take the arctangent

... cos(y -z) = cos(z -24) . . . . take the cosine

a.   since the profit made in 2012 is equal to the profit made in 2014, the profit is symmetric about the line y = 120,000.

step-by-step explanation:

answer: .75 km

step-by-step explanation: