Okay...if you have a graphing calculator...then you would press the blue button that says "2nd" and in the middle of the calculator there should be a button thqat says "sin" , press it, then it will show the word "sin" on our screen like this: sin(, that is when you anter the number 0.47 and make sure you press the close parantheses button after that which is ")" and then press enter....then number you get is the solution.
Hope I helped :)
