if
α=0.35π rad ; β=-0.35π rad
Please give a more detailed calculate (step by step) and how to input in scientific calculator
σ=2/π*[α+sinα*cos(α+2β)]
You have to re-arrange your equation like this. Start from the left hand inside the bracket with sin(.35pi) followed by cos(.35pi+2X.35pi). If you want it in Radians, just switch the calculator into radians, in the bottom left hand corner. Your answer should be=0.1397..............etc.
Use this equation to get your calculations:
2/pi (0.35 pi+sin(0.35 pi) cos(0.35 pi+2×0.35 pi))
