Which of the following have a frequency factor of b = 1?
a sine function whose period is 2n radians
a sine function whose x-coefficient is 21
a cosine function with no phase shift whose x-coefficient is 1
a sine function whose graph shows 2 cycles from - 47 radians to 0
a sine function whose graph shows 2 cycles from 0 to 2n radians
a cosine function whose graph shows 4 cycles from 0 to 4
radians
a cosine function whose graph shows 1 cycle from 37 radians to 57 radians
DONE

a

explanation:

1) is right

step-by-step explanation:

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh