Recent content by kbr1804

K
MHB Proving trigonometric functions

yeah i think i got it lol thanks alot:)and yeah it was supposed to equal to 3cos2x that was a typo
- kbr1804
- Post #3
- Oct 6, 2021
- Forum: General Math
K
MHB Proving trigonometric functions

How can i prove that 6cos(x+45) cos(x-45) is equal to 3cosx?
- kbr1804
- Thread
- Oct 6, 2021
- Tags
  
  Functions Trigonometric Trigonometric functions
- Replies: 9
- Forum: General Math