Write each expression as a single trigonometric function. cos(6x)cos(4x) + sin(6x )sin(4x) = Preview TIP Enter your answer as an expression. Example: 3x/ 2+1, x/5, (a+b)/c Be sure your variables match those in the question Get Help: Video Points possible: 1 Licence This is attempt 1 of 3.Write each expression as a single trigonometric function. cos(8x )cos(3x) - sin(8x )sin(3x) = Preview TIP Enter your answer as an expression. Example: 3x 2+1, x/5, (a+b)/c Be sure your variables match those in the question Get Help Video Points possible: 1 Licenge This is attempt 1 of 3. SubmitFor the following problem, assume that all given angles are in simplest form, so that if A is in Q IV you may assume that 270"