Answer:
2.306
Step-by-step explanation:
u while times the number
You have to find slope which is Y=MX+B so it would be m as slope so u then solve
Cos² 2x = (1+cos 4x )/2
cos² 6x = (1+cos 12x)/2
subtract to get 1/2 (cos 4x - cos 12x )
= 1/2 (2 sin 4x sin 8x ) as cos A - cos B = 2 [ sin (A+B)/2 sin (A-B)/2 ]
so the answer
