Find the next two positive and two negative angles that are coterminal with the given quadrantal angle.

(1). 450 degree and 90 degree.

(2). - 270 degree and - 990 degree.

Step-by-step explanation:

So, we are given the the following data or parameters in this question or problem; A = -630 degree, and we are to look for the next two positive and two negative angles that are coterminal with the given quadrantal angle.

For the positive(+ve) angles we have that;

- 630 degree + 1080 degree = 450 degree; and - 630 degree + 720 degree= 90 degree.

For the negative(-ve) angles we have that;

- 630 degree + 360 degree= - 270 degree and - 630 degree - 360 degree = - 990 degree.

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step-by-step explanation:

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none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square