f(v) = (the matrix)(adsbygoogle = window.adsbygoogle || []).push({});

|cosx sinx |

|sinx -cosx |(v)

If x is in R and f: R^2 --> R^2

show that f is a reflection in a line L through the origin, and find the line of reflection.

im having trouble figureing this out, i know that i need to find a line L fixed by f, and then to compare the formulas for the reflection --> RL and f.

i just dont know what to do. Thank you.

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# Homework Help: Geometry - Reflection.

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