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प्रश्न
tan`(pi/4 - x)` is:
विकल्प
`((1 + tan x)/(1 - tan x))`
`((1 - tan x)/(1 + tan x))`
1 - tan x
1 + tan x
MCQ
उत्तर
`((1 - tan x)/(1 + tan x))`
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Trigonometric Ratios
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