Q. Which of the following is equivalent to tan5π ?tan(−5π)tan59πtan54πtan(−59π)
Periodicity of Tangent Function: Understand the periodicity of the tangent function. The tangent function has a period of π, which means that tan(θ)=tan(θ+kπ) for any integer k.
Comparison with Original Angle: Compare the given angles with the original angle (π/5) using the periodicity of the tangent function.We need to find an angle that differs from (π/5) by an integer multiple of π.
Analysis: tan(−(5π)): Analyze the first option: tan(−(5π)). The tangent function is odd, which means tan(−θ)=−tan(θ). Therefore, tan(−(5π)) is not equivalent to tan(5π) because it will have the opposite sign.
Analysis: tan(59π): Analyze the second option: tan(59π). Using the periodicity of the tangent function, we can subtract π from 59π to see if it is equivalent to 5π. tan(59π)=tan(59π−π)=tan(59π−55π)=tan(54π). This is not equivalent to tan(5π).
Analysis: tan(54π): Analyze the third option: tan(54π). This angle is not equivalent to (5π) because it is not an integer multiple of π away from (5π).
Analysis: tan(−(59π)): Analyze the fourth option: tan(−(59π)). Using the periodicity of the tangent function, we can add π to (−(59π)) to see if it is equivalent to (5π). tan(−(59π))=tan(−(59π)+π)=tan(−(59π)+(55π))=tan(−(54π)). This is not equivalent to tan(5π) because it is not an integer multiple of π away from (5π).
Conclusion: Conclusion.None of the given options are equivalent to tan(5π) because none of them are an integer multiple of π away from 5π.
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