3 2 Use basic identities to simplify sin a: + cos .1: sins}. Enclose arguments of functions in parentheses. For example, sin (22:). Remember that writing sin(x) to the fourth power as sin4 (to) is just a mathematical shorthand. You should write it as (sin (.1:))'4 , which is what Mohius expects. 3 2 sin m+cos msinm=' IEDD