
#1
Apr709, 05:39 AM

P: 47

1. The problem statement, all variables and given/known data
I need to solve the equation [tex]cos 5x + cos 3x = cos x[/tex] Do the first two terms add together to be cos 8x? Then use double angle formula to solve? 



#2
Apr709, 05:45 AM

HW Helper
P: 4,442

Use formula to convert sum of trig. function to product form. 


Register to reply 
Related Discussions  
Very quick trig question  Calculus & Beyond Homework  1  
Trig Functions question  Precalculus Mathematics Homework  5  
Insanely vague thermodynamics question  Introductory Physics Homework  42  
Quick Easy question  Introductory Physics Homework  5  
Easy quick log question!  Introductory Physics Homework  3 