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Mathematics 8 Online
OpenStudy (maheshmeghwal9):

Plz help:)

OpenStudy (maheshmeghwal9):

OpenStudy (maheshmeghwal9):

I want only hints:)

OpenStudy (cwrw238):

the identity tan2x = 2tanx / ( 1 - tan^2x) might help with the first problem

OpenStudy (anonymous):

its absolutely correct

OpenStudy (maheshmeghwal9):

& what to do of 2nd one?

OpenStudy (anonymous):

Find out

OpenStudy (maheshmeghwal9):

LOL how?

OpenStudy (anonymous):

Think about it in terms of complex numbers.

OpenStudy (anonymous):

^^ For the second one. (De'moivre's theorum) :)

OpenStudy (maheshmeghwal9):

Thanx guys:)

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