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Leona [35]
3 years ago
12

Which of the following is a quadrantal angle​

Mathematics
1 answer:
Setler [38]3 years ago
4 0

Question:

Which of the following is a quadrantal angle?

a) π/2        b) π/3        c) 2π/3      D) 4π/5​

Answer:

(a)\ \frac{\pi}{2}

Step-by-step explanation:

Required

Which of a to d is a quadrantal angle

An angle is said to be quadrantal if and only if the angle has its terminal side on the x or y axis.

Such angles (in degrees) are: 90, 180, 270, etc.

So, we have:

(a)\ \frac{\pi}{2}

[Convert to degrees]

\frac{\pi}{2} = \frac{180}{2}

\frac{\pi}{2} = 90

Hence:

(a)\ \frac{\pi}{2} is a quadrantal angle

<em>The other options are not.</em>

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