Need help with Excel Formula

I am having trouble figuring out a formula when figuring angles. I will write what I need (very simply) so you understand what I am trying to do.

90(SIN) X 100 = / 45(SIN)=
Where: 90 = Adjacent Angle
100 = Width
45 = Deploy angle

I want to be able to put this equation in excel and figure the result for about 2000 possible scenarios. When I do the equation with a calculator, it works great, when in excel, no matter what I've tried after hours of research, no luck. Thanks in advance for all help.