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Prove that : cotx/2 - tanx/2 = 2 cotx
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cotx/2 - tanx/2 = 2 cotx
cot x/2 - tan x/2 = 2 cot x
prove that : cot x/2 - tan x/2 = 2 cot x
#math #trigonometry
cot x/2 - tan x/2 = 2 cot x
prove that : cot x/2 - tan x/2 = 2 cot x
#math #trigonometry