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
Answer: 3.048
Step-by-step explanation:
10 ft * 0.3048 m/1 ft = 3.048 m
2x - 5 > 7 |add 5 to both sides
2x > 12 |divide both sides by 2
x > 6
<h3>Answer: A. x > 6</h3>
Answer:
Like 789
Step-by-step explanation:
909) to the power of 88
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