$the\ cos\ function\ is\ periodic:\ \ \ the\ period=2 \pi\\\\cos(2 \pi + \alpha )=cos \alpha \\\\------------------------\\\\cos\bigg{(} \frac{\big{13 \pi }}{\big{6}}\bigg{)}=cos\bigg{(} 2 \pi +\frac{\big{ \pi }}{\big{6}}\bigg{)}=cos\bigg{(} \frac{\big{ \pi }}{\big{6}}\bigg{)}= \frac{\big{ \sqrt{3} }}{\big{2}}$

5 0

3 years ago

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What is the movement of particles in solid matter

goldfiish [28.3K]

Answer:

In solid matter the particles jiggle but generally do not move from place to place

5 0

3 years ago

76. Which sequence is represented by y = 8x - 22 where x represents the term number and y represents the term

Vinil7 [7]

Answer:

D. -14, -6, 2, 10, ...

Step-by-step explanation:

Plug in the values for x.

8(1) - 22 = x

8 - 22 = x

-14 = x

8(2) - 22 = x

16 - 22 = x

-6 = x

8(3) - 22 = x

24 - 22 = x

2 = x

8(4) - 22 = x

32 - 22 = x

10 = x

5 0

3 years ago