Howdy! id love to have these questions answered asap! you for the !

1) which angle is not coterminal to 120 degrees?
a. 840
b. -180
c. 480

2) use the unit circle and the reference angle to determine which of the following trigonometric values is correct when theta = -90
a. cos theta = undefined
b. sin theta = -1
c. tan = 0

1. B.

2. B.

Step-by-step explanation:

Trigonometry

1) Coterminal angles can be found by adding or subtracting 360° (or 2\pi radians) to a given angle. If we have 120°, adding 360° gives 480°, adding again 360° gives 840°. There is no way to get -180°, so this option is not a coterminal angle to 120°

2)

A. , and not undefined

B. . This is correct

C.   is undefined, not zero

Thus the only correct option is B.

definition: a circle is the  set of all points in a plane that are equidistant  from a given  point  called the center of the circle. we use the symbol ⊙ to represent a circle. the a line segment from the center of the circle to  any point  on the circle is a radius of the circle.

step-by-step explanation:

i googled it and this is what i got i don't know how it is. sorry.

step-by-step explanation:

i found the koficent of the linear function and i foun c acordind to the strict formula y=kx+c and then i took 2 as an x and replacet it on the formula i found and then foun the y