How do i find the sin 11pi/2 without using a calculator?

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Complete the solution of the equation. find the value of y when x equals to 1 9x-5y=29

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?