Question: What restrictions must be placed on the variable in each of the following identities? Why? a) b) sin 2x = 2 tan x 1 +

What restrictions must be placed on the variable in each of the following identities? Why?

a) sin 2x = 2 tan x 1 + tanx

b) 

sin 2x = 2 tan x 1 + tanx

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