Find the measures of two angles, one positive and one negative that are coterminal with pi/5

1 answer:

7 0

To find coterminal angles for an angle, β, given in radians use the following formula:
coterminal angle = β + 2πk
where k is an integer {..., -3, -2, -1, 0, 1, 2, 3, ...}
Negative Coterminal Angle: k = -1
NCA = π/5 + 2π(-1)
= -9π/5
Positive Coterminal Angle: k = 1
PCA = π/5 + 2π(1)
= 11π/5
The following answers are just one of many possible answer... you have infinite number of choices for k.
$NCA = \frac{-9 \pi }{5}$
$PCA= \frac{11 \pi }{5}$

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