A floor plan shows that a tiny house has a length of 40 feet and a width of 25 feet

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet