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problem............

Note by Subhrajyoti Sinha
2 years, 11 months ago

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apply a^3 + b^3 in denominator it will come (sin^4 x + cos^4 x - sin^2x,cos^2x) then simplify it to get (1- 3 sin^2x.cos^2x) and then divide it by cos^2 x ... then substitute tan x = t ...hence solve it! Arijit Banerjee · 2 years, 10 months ago

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