If sin x=0.5, what is the value of cos x?

Find the given elements if matrix d:

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

What is a possible solutions of the x> 3?