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On a unit circle θ=pi/2 radians. identity the terminal point and sin θ

On a unit circle θ=pi/2 radians. identity the terminal point and sin θ-example-1
User Lyuda
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Answer:

A.

Explanation:

Answer A. sin(pi/2)=1, and because it is orthogonal to the x-axis, the x value is 0.

User Oakes
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