c. Write a C++ expression for sin(30 degree) d. Evaluate the following according to rules of precedence in c++ 1*10 + 2*10 + 3 = ? e. Given a = 6, b = 8, c = 5, evaluate the below expression if, it is true or false: {b = c || c >= b) _______? g. Determine the value of the following expressions. Assume that a = 5, b = 2, c = 4, d = 6 and e = 3 if the expression is true, write 1; if false, write 0