Which of the following have a frequency factor of b = 1?
•a sine function whose period is 2pi radians.
•a sine function whose x-coefficient is 2pi
•a cosine function with no phase shift whose x-coefficient is 1.
•a sine function whose graph shows 2 cycles from - 4pi radians to 0.
•a sine function whose graph shows 2 cycles from 0 to 2pi radians.
•a cosine function whose graph shows 4 cycles from 0 to 4pi radians.
•a cosine function whose graph shows 1 cycle from 3pi radians to 5pi radians.

2

step-by-step explanation:

1x2=2

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-payshence

the answer would be d

straight away you can eliminate a and c because not all books contain a scientific skill because some may be fiction. c is also wrong because it saids that the only way children can learn is through books which is incorrect.

b is also wrong because reading can be a scientific skill but not always, therefore it is wrong which leaves you with d, the correct answer since it said that it can children learn.

hope this ! : 3