TT
9.
If e is not integral multiple of and 21,3A are
2
not odd multiple of and prove that
2
TT

By Ivy

TT
9.
If e is not integral multiple of and 21,3A are
2
not odd multiple of and prove that
2
TT
i) Tano + 2 Tan 20+4 Tan 40 + 8Cot80 = Coto​

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Ivy

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