Question

Determine two coterminal angles (one positive and one negative) for the given angle

Determine two coterminal angles (one positive and one negative) for the given angle. Give your answers in radians.

a) 8pie/9 b)8pie/45

I know that you have to add 2pie but I do not know how to do that.
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Answer #1
The last two should read:
π/2 + 2π = (5/2)π
π/2 + 4π = (9/2)π
answered by: Lynne
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Answer #2
Coterminal angles for an angle α are angles of the form α±2kπ where k is different from zero.
For example, some coterminal angles of π/2 are:
π/2 - 4π = -(7/2)π
π/2 - 2π = -(3/2)π
π/2 + 2π = (3/2)π
π/2 + 4π = (7/2)π
answered by: Ch
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