Assignment 1: Problem 9 Previous Problem Problem List Next Problem (1 point) Use a sum or difference formula or a half angle formula to determine the value of the trigonometric functions. Give exact answers. Do not use decimal numbers. The answer should be a fraction or an arithmetic expression. If the answer involves a square root it should be enter as sqrt; e.g. the square root of 2 ns should be written as sqrt(2); sin ( S ) = sin ( 12) Cos( 131 ) = cos( 72 ) Note: You can earn partial credit on this problem. Preview My Answers Submit Answers You have attempted this problem 0 times. You have 3 attempts remaining. Page generated at 09/19/2022 at 06:13pm EDT WeBWork @ 1996-2019| theme: math4 | ww_version: 2.15 | pg_version 2.15] The WeBWork Project