use the first five terms of the trigonometric series to approximate the value of cos5pi/12 to four decimal places. then compare the approximation to the actual value.

The cash price of a television is $580.the hire-purchase price of the television is $865.the hire-purchase price is an initial deposit of n% of the cash price and 6 equal monthly payments of $120.find the value of n.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41

Find the domain and range of the following function f(x) = 51x - 21+ 4