Is it true that since sin2x + cos2x = 1, then sin(x) + cos(x) = 1? explain your answer.

No it is not true because plugging in something like x = pi/4 radians (equivalent to 45 degrees) leads to the left side not being equal to 1. The left side will simplify to sqrt(2). So the equation is not true when x = pi/4 radians. There are infinitely other counter examples to use; however, x = 0 or x = pi/2 radians will actually be bad values to pick so avoid those.

Area of circle = pi * radius^2radius is given to be 1/2 inchespi * (1/2)^2 = pi/4 inches^2 = 0.785 inches^2