Q. Express as a function of a DIFFERENT angle, 0∘≤θ<360∘.tan(310∘)tan(□∘)
Understand the problem: Understand the problem.We need to express tan(310°) as a function of a different angle within the range of 0° to 360°. We can use the fact that the tangent function has a period of 180°, which means tan(θ)=tan(θ+180°). We can also use the symmetry properties of the tangent function on the unit circle.
Find the reference angle: Find the reference angle.The reference angle is the acute angle that the terminal side of the given angle makes with the x-axis. For an angle in the fourth quadrant, like 310∘, the reference angle is 360∘−310∘=50∘. This means tan(310∘) is equal to tan(50∘), but since 310∘ is in the fourth quadrant where tangent is negative, we have tan(310∘)=−tan(50∘).
Express as a function: Express tan(310°) as a function of a different angle.We can use the reference angle found in Step 2 to express tan(310°) as a function of 50°. Since tan(θ)=−tan(180°−θ) for angles in the second quadrant, we can say tan(310°)=−tan(180°−50°)=−tan(130°). Therefore, tan(310°) can be expressed as −tan(130°).
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