How do you evaluate #cot300°#?
A
cot =
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Find cot 300
cot 300 = cot (120 + 180) = cot 120
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To evaluate ( \cot(300^\circ) ), you can use the unit circle or the periodicity properties of the cotangent function:
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Convert ( 300^\circ ) to its equivalent angle within one full revolution. ( 300^\circ ) is equivalent to ( 300^\circ - 360^\circ = -60^\circ ) within one full revolution.
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Since the cotangent function has a period of ( 180^\circ ), you can evaluate ( \cot(-60^\circ) ) instead.
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The cotangent function is defined as the reciprocal of the tangent function. The tangent of ( -60^\circ ) is ( \tan(-60^\circ) = -\sqrt{3} ) (using the unit circle or reference angles).
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Therefore, ( \cot(-60^\circ) = \frac{1}{\tan(-60^\circ)} = \frac{1}{-\sqrt{3}} = -\frac{1}{\sqrt{3}} = -\frac{\sqrt{3}}{3} ).
Thus, ( \cot(300^\circ) = -\frac{\sqrt{3}}{3} ).
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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
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