Problem 15 of 7
Find tangent from unit-circle point (0,1).
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compute y/x where defined.
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Compute y/x where defined; tangent is undefined on the y-axis.
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Solution
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1. Use tan(theta)=sin(theta)/cos(theta)=y/x.
2. Check if x-coordinate is zero.
3. Simplify the ratio or state undefined.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
X/y reciprocal unless cotangent is requested.