Complementary angles Find the value of x in each right angle.

I cannot get this wrong

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

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2