A unit circle with the following P coordinate is given. The value of θ is:
A
30∘
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B
60∘
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C
45∘
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D
75∘
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Solution
The correct option is C45∘ It is given that the circle is a unit circle.
Therefore we know that the x coordinate is cosθ and y coordinate is sinθ.
Here the value of both the coordinates is 1√2. ⇒ the angle θ is 45∘.