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how can i solve it

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I solved it and this my way :)

Note by Saleem Hd
1 year, 6 months ago

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Hint: For small $$x$$, $$\tan x \approx x + \frac 1 3 x^3$$ · 1 year, 6 months ago

Yeah :D I solved it finally :D · 1 year, 6 months ago

we can't use $$L'hopitals$$. I ithink the limit doesn't exist · 1 year, 6 months ago

yes we cannot use L'hopital Rule here , but the answer is 1/3 I don't now how :'( · 1 year, 6 months ago