What is the value of tan9*-tan27*-tan63*+tan81*?
or:What is the value of tan9*-tan27*-tan63*+tan81*?or:Punch it into a calculator and see what you get. That's all anybody can do.
or:What is the value of tan9*-tan27*-tan63*+tan81*?
or:Punch it into a calculator and see what you get. That's all anybody can do.
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