Q. Which of the following is not equivalent to tan4π ?tan47πtan49πtan45πtan(−47π)
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+nπ) for any integer n.
Evaluate tan(4π): Evaluate tan(4π).The value of tan(4π) is 1 because the tangent of an angle in a right triangle with equal sides is 1.
Evaluate tan(47π): Evaluate tan(47π). Using the periodicity of the tangent function, tan(47π) is equivalent to tan(47π−2π) which is tan(−4π). Since tan(−θ)=−tan(θ), tan(−4π) = −tan(4π) = −1.
Evaluate tan(49π): Evaluate tan(49π). Using the periodicity of the tangent function, tan(49π) is equivalent to tan(49π−2π) which is tan(4π). Therefore, tan(49π) = tan(4π) = 1.
Evaluate tan(45π): Evaluate tan(45π). Using the periodicity of the tangent function, tan(45π) is equivalent to tan(45π−π) which is tan(4π). Therefore, tan(45π)=tan(4π)=1.
Evaluate tan(−47π): Evaluate tan(−47π). Using the periodicity of the tangent function, tan(−47π) is equivalent to tan(−47π+2π) which is tan(4π). Therefore, tan(−47π)=tan(4π)=1.
Determine Non-Equivalent Option: Determine which option is not equivalent to tan(4π). From the previous steps, we have determined that tan(47π) is the only option that is not equivalent to tan(4π) because it equals −1, while all the other options equal 1.
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